ass-kisser vs sycophant

ass-kisser and sycophant both are nouns.

Word	Noun	Adjective	Verb	Adverb
ass-kisser	Yes	No	No	No
sycophant	Yes	No	No	No

As nouns, ass-kisser and sycophant are synonyms defined as:

ass-kisser and sycophant: a person who tries to please someone in order to gain a personal advantage

Other synonyms of ass-kisser include crawler, lackey, toady.

ass-kisser (noun)	sycophant (noun)
a person who tries to please someone in order to gain a personal advantage	a person who tries to please someone in order to gain a personal advantage