lull vs silence

lull and silence both are nouns.

Word	Noun	Adjective	Verb	Adverb
lull	Yes	No	Yes	No
silence	Yes	No	Yes	No

As verbs, silence is a hypernym of lull; that is, silence is a word with a broader meaning than lull:

Other hypernyms of lull include hush, hush up, quieten, shut up, still.

lull (noun)	silence (noun)
a period of calm weather	the absence of sound
a pause during which things are calm or activities are diminished	a refusal to speak when expected
	the trait of keeping things secret
	the state of being silent (as when no one is speaking)

lull (verb)	silence (verb)
become quiet or less intensive	cause to be quiet or not talk
make calm or still	keep from expression, for example by threats or pressure
calm by deception