actin vs simple protein

actin and simple protein both are nouns.

Word	Noun	Adjective	Verb	Adverb
actin	Yes	No	No	No
simple protein	Yes	No	No	No

As nouns, simple protein is a hypernym of actin; that is, simple protein is a word with a broader meaning than actin:

actin: one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form
simple protein: a protein that yields only amino acids when hydrolyzed

actin (noun)	simple protein (noun)
one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form	a protein that yields only amino acids when hydrolyzed