twiddle vs twirl

twiddle and twirl both are nouns.

Word	Noun	Adjective	Verb	Adverb
twiddle	Yes	No	Yes	No
twirl	Yes	No	Yes	No

As verbs, twiddle and twirl are synonyms defined as:

Other synonyms of twiddle include swirl, whirl.

twiddle (noun)	twirl (noun)
a series of small (usually idle) twists or turns	the act of rotating rapidly
	a sharp bend in a line produced when a line having a loop is pulled tight

twiddle (verb)	twirl (verb)
manipulate, as in a nervous or unconscious manner	turn in a twisting or spinning motion
turn in a twisting or spinning motion	cause to spin