full professor vs professor

full professor and professor both are nouns.

Word	Noun	Adjective	Verb	Adverb
full professor	Yes	No	No	No
professor	Yes	No	No	No

As nouns, professor is a hypernym of full professor; that is, professor is a word with a broader meaning than full professor:

full professor: a professor of the highest rank
professor: someone who is a member of the faculty at a college or university

Other hypernyms of full professor include prof.

full professor (noun)	professor (noun)
a professor of the highest rank	someone who is a member of the faculty at a college or university