pull someone's leg vs cozen

pull someone's leg and cozen both are verbs.

Word	Noun	Adjective	Verb	Adverb
pull someone's leg	No	No	Yes	No
cozen	No	No	Yes	No

As verbs, cozen is a hypernym of pull someone's leg; that is, cozen is a word with a broader meaning than pull someone's leg:

Other hypernyms of pull someone's leg include deceive, delude, lead on.

pull someone's leg (verb)	cozen (verb)
subject to a playful hoax or joke	cheat or trick
	act with artful deceit
	be false to; be dishonest with