ticking vs ticktock

ticking and ticktock both are nouns.

Word	Noun	Adjective	Verb	Adverb
ticking	Yes	No	No	No
ticktock	Yes	No	Yes	No

As nouns, ticktock is a hyponym of ticking; that is, ticktock is a word with a more specific, narrower meaning than ticking:

Other hyponyms of ticking include tictac, tocktact.

ticking (noun)	ticktock (noun)
a strong fabric used for mattress and pillow covers	steady recurrent ticking sound as made by a clock
a metallic tapping sound

ticking (verb)	ticktock (verb)
	make a sound like a clock or a timer