suck up vs toady

suck up is not a noun while toady is a noun.

Word	Noun	Adjective	Verb	Adverb
suck up	No	No	Yes	No
toady	Yes	No	Yes	No

As verbs, suck up and toady are synonyms defined as:

Other synonyms of suck up include bootlick, fawn, kotow, kowtow, truckle.

suck up (noun)	toady (noun)
	a person who tries to please someone in order to gain a personal advantage

suck up (verb)	toady (verb)
try to gain favor by cringing or flattering	try to gain favor by cringing or flattering
take in, also metaphorically
ingratiate oneself to; often with insincere behavior