etymologizing vs etymologize

etymologizing is a noun but etymologize is not a noun.

Word	Noun	Adjective	Verb	Adverb
etymologizing	Yes	No	No	No
etymologize	No	No	Yes	No

etymologizing (noun)	etymologize (noun)
(historical linguistics) an explanation of the historical origins of a word or phrase

etymologizing (verb)	etymologize (verb)
	construct the history of words
	give the etymology or derivation or suggest an etymology (for a word)