studio vs atelier

studio and atelier both are nouns.

Word	Noun	Adjective	Verb	Adverb
studio	Yes	No	No	No
atelier	Yes	No	No	No

As nouns, atelier is a hyponym of studio; that is, atelier is a word with a more specific, narrower meaning than studio:

Other hyponyms of studio include artist's workroom, broadcasting studio, recording studio.

studio (noun)	atelier (noun)
workplace for the teaching or practice of an art	a studio especially for an artist or designer
an apartment with a living space and a bathroom and a small kitchen
workplace consisting of a room or building where movies or television shows or radio programs are produced and recorded