mycosterol vs sterol

mycosterol and sterol both are nouns.

Word	Noun	Adjective	Verb	Adverb
mycosterol	Yes	No	No	No
sterol	Yes	No	No	No

As nouns, sterol is a hypernym of mycosterol; that is, sterol is a word with a broader meaning than mycosterol:

mycosterol: a kind of sterol found in fungi.
sterol: any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances

Other hypernyms of mycosterol include steroid alcohol.

mycosterol (noun)	sterol (noun)
a kind of sterol found in fungi.	any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances