Gnome

A constant hum of busy activity pervades the warrens and neighborhoods where gnomes form their close-knit communities. Louder sounds punctuate the hum: a crunch of grinding gears here, a minor explosion there, a yelp of surprise or triumph, and especially bursts of laughter. Gnomes take delight in life, enjoying every moment of invention, exploration, investigation, creation, and play.

Vibrant Expression

A gnome’s energy and enthusiasm for living shines through every inch of his or her tiny body. Gnomes average slightly over 3 feet tall and weigh 40 to 45 pounds. Their tan or brown faces are usually adorned with broad smiles (beneath their prodigious noses), and their bright eyes shine with excitement. Their fair hair has a tendency to stick out in every direction, as if expressing the gnome’s insatiable interest in everything around. A gnome’s personality is writ large in his or her appearance. A male gnome’s beard, in contrast to his wild hair, is kept carefully trimmed but often styled into curious forks or neat points. And their hair can naturally come in nearly every shade under the sun, from commons browns and blondes, to eccentric blues, pinks and greens. They can live to between 3-500 years old, standing no more than 3 feet tall. A gnome’s clothing, though usually made in modest earth tones, is elaborately decorated with embroidery, embossing, or gleaming jewels.

Bright Burrows

Gnomes make their homes in hilly, wooded lands. They live underground but get more fresh air than Dwarves do, enjoying the natural, living world on the surface whenever they can. Their homes are well hidden by both clever construction and simple illusions. Gnomes live in a wide variety of circumstances. From small family communities living communally under one roof, to big cities, to gnomish dominated towns of their own devising. They welcome visitors quickly into their bright, warm burrows. Those who are not welcome are unlikely to find the burrows in the first place. Gnomes who settle in human lands are commonly gemcutters, engineers, sages, or tinkers. Some human families retain gnome tutors, ensuring that their pupils enjoy a mix of serious learning and delighted enjoyment. A gnome might tutor several generations of a single human family over the course of his or her long life. Owning not in small part to their small stature, Gnomes play to their strengths; their mind, their magic, personality and cunning.
Gnomes all around the world are found as tinkerers, engineers, bards, practitioners of the arcane, and as rogues and thieves. That is not to say Gnomes aren't fighters, and some train for many years (with a short sword) to defend their homes should unwelcome guests present themselves. Gnomes do find themselves gravitating towards the more cerebral pursuits, and towards organizations like the Askari Watchers, New Dawn Consortium, or Violet Eye.
Curious and impulsive, gnomes might take up adventuring as a way to see the world or for the love of exploring, being just eager to join Adventuring Groups as any other species. As lovers of gems and other fine items, some gnomes take to adventuring as a quick, if dangerous, path to wealth. Regardless of what spurs them to adventure, gnomes who adopt this way of life eke as much enjoyment out of it as they do out of any other activity they undertake, sometimes to the great annoyance of their adventuring companions.

A People of many homes

Gnomes formally have no kingdom of their own and can be found widely spread across the world in cities everywhere; but if anywhere could be called a home it would be the Grand Duchies of Aranoc where a sizeable portion of the population is Gnomish. But they are also known to congregate in several predominantly Gnomish towns like Finklestown, Tinklocket, Trundlewood, and Fuselight Hollow, etc; most of which also have sizable Halfling and/or Hill dwarf populations. Many gnomes also have taken to living in regions heavily populated by Halflings such as the Mootland, in the southern Ondari Dominion, or with Hill Dwarves in their rocky above ground cities like Granite city of Tor Barosh, or Crag City of Dun Vogal. Lastly within the Meridian Concord the is the famed floating mechano-island of Fizzwheel Barge.
Not all Gnomes are the same though, they are also split into several sub-cultures, each with their own distinct aspects. All of them still share the curiosity and propensity for craftsmanship and the cerebral, along with an affinity for illusion magic, and a shared lack of cohesive or nationalistic history. Deep Gnomes differ greatly from their cousins, espcially in a skin colour, shape of their ears, general demeanour and intense reclusiveness. Deep Gnomes, unlike their cousins reside exclusively underground, to the point where many will go their very long lives without ever seeing the sun; which warps their sense of time and reality. Great shapers of stone and metal similar to that of the dwarves; greatest Gnome Auramite smiths are almost always Deep Gnomes. 
Against popular belief, Gnomes are actually one of the oldest races on the continent, and have the among the best smiths in the world, rivaling those of the Elves, Dwarves, and Giants if not in the sheer size of their creation, but the complexity and craftsmanship. Those smiths are rare, but are among the only people to hold the secret of smithing the rare metal Auramite.
https://www.dndbeyond.com/races/gnome - for in game stats and rules