stiffness vs resolve

stiffness and resolve both are nouns.

Word	Noun	Adjective	Verb	Adverb
stiffness	Yes	No	No	No
resolve	Yes	No	Yes	No

As nouns, resolve is a hypernym of stiffness; that is, resolve is a word with a broader meaning than stiffness:

Other hypernyms of stiffness include firmness, firmness of purpose, resoluteness, resolution.

stiffness (noun)	resolve (noun)
the physical property of being inflexible and hard to bend	the trait of being resolute
the property of moving with pain or difficulty	a formal expression by a meeting; agreed to by a vote
the inelegance of someone stiff and unrelaxed (as by embarrassment)
excessive sternness
firm resoluteness in purpose or opinion or action

stiffness (verb)	resolve (verb)
	cause to go into a solution
	bring to an end; settle conclusively
	reach a decision
	find the solution
	understand the meaning of
	reach a conclusion after a discussion or deliberation
	make clearly visible