sidle up vs cozy up

sidle up and cozy up both are verbs.

Word	Noun	Adjective	Verb	Adverb
sidle up	No	No	Yes	No
cozy up	No	No	Yes	No

As verbs, sidle up and cozy up are synonyms defined as:

sidle up and cozy up: ingratiate oneself to; often with insincere behavior

Other synonyms of sidle up include cotton up, play up, shine up, suck up.

sidle up (verb)	cozy up (verb)
ingratiate oneself to; often with insincere behavior	ingratiate oneself to; often with insincere behavior