truckle vs soften

truckle is a noun but soften is not a noun.

Word	Noun	Adjective	Verb	Adverb
truckle	Yes	No	Yes	No
soften	No	No	Yes	No

As verbs, soften is a hypernym of truckle; that is, soften is a word with a broader meaning than truckle:

Other hypernyms of truckle include relent, yield.

truckle (noun)	soften (noun)
a low bed to be slid under a higher bed

truckle (verb)	soften (verb)
try to gain favor by cringing or flattering	become soft or softer
yield to out of weakness	make soft or softer
	lessen in force or effect
	make less severe or harsh
	protect from impact
	make (images or sounds) soft or softer
	give in, as to influence or pressure