soften vs change intensity

soften and change intensity both are verbs.

Word	Noun	Adjective	Verb	Adverb
soften	No	No	Yes	No
change intensity	No	No	Yes	No

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

soften (verb)	change intensity (verb)
become soft or softer	increase or decrease in intensity
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