semiotician vs linguist

semiotician and linguist both are nouns.

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

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

Other hypernyms of semiotician include linguistic scientist.

semiotician (noun)	linguist (noun)
a specialist in the study of meaning	a person who speaks more than one language
	a specialist in linguistics