fiddle with vs manipulate

fiddle with and manipulate both are verbs.

Word	Noun	Adjective	Verb	Adverb
fiddle with	No	No	Yes	No
manipulate	No	No	Yes	No

As verbs, manipulate is a hypernym of fiddle with; that is, manipulate is a word with a broader meaning than fiddle with:

fiddle with (verb)	manipulate (verb)
manipulate, as in a nervous or unconscious manner	treat manually, as with massage, for therapeutic purposed
	hold something in one's hands and move it
	maintain influence over (others or oneself) skillfully, usually to one's advantage
	manipulate in a fraudulent manner
	influence or control shrewdly or deviously
	tamper, with the purpose of deception