megestrol acetate vs megestrol

megestrol acetate and megestrol both are nouns.

Word	Noun	Adjective	Verb	Adverb
megestrol acetate	Yes	No	No	No
megestrol	Yes	No	No	No

As nouns, megestrol acetate and megestrol are synonyms defined as:

megestrol acetate and megestrol: a synthetic progestational compound used to treat endometrial carcinoma

megestrol acetate (noun)	megestrol (noun)
a synthetic progestational compound used to treat endometrial carcinoma	a synthetic progestational compound used to treat endometrial carcinoma