gentle vs lull

gentle is not a noun while lull is a noun.

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

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

Other hypernyms of gentle include calm, calm down, quiet, quieten, still, tranquilize, tranquillise, tranquillize.

gentle (noun)	lull (noun)
	a period of calm weather
	a pause during which things are calm or activities are diminished

gentle (adjective)	lull (adjective)
marked by moderate steepness
having little impact
soft and mild; not harsh or stern or severe
belonging to or characteristic of the nobility or aristocracy
quiet and soothing
easily handled or managed
having or showing a kindly or tender nature

gentle (verb)	lull (verb)
stroke soothingly	become quiet or less intensive
cause to be more favorably inclined; gain the good will of	make calm or still
give a title to someone; make someone a member of the nobility	calm by deception