sociolinguist vs linguist

sociolinguist and linguist both are nouns.

Word	Noun	Adjective	Verb	Adverb
sociolinguist	Yes	No	No	No
linguist	Yes	No	No	No

As nouns, linguist is a hypernym of sociolinguist; that is, linguist is a word with a broader meaning than sociolinguist:

sociolinguist: a linguist who studies the social and cultural factors that influence linguistic communication
linguist: a specialist in linguistics

Other hypernyms of sociolinguist include linguistic scientist.

sociolinguist (noun)	linguist (noun)
a linguist who studies the social and cultural factors that influence linguistic communication	a person who speaks more than one language
	a specialist in linguistics