soften vs weaken

soften and weaken both are verbs.

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

As verbs, soften and weaken are synonyms defined as:

Other synonyms of soften include break, damp, dampen.

soften (verb)	weaken (verb)
become soft or softer	become weaker
make soft or softer	lessen the strength of
lessen in force or effect	reduce the level or intensity or size or scope of
make less severe or harsh	lessen in force or effect
protect from impact	destroy property or hinder normal operations
make (images or sounds) soft or softer
give in, as to influence or pressure