towering vs soaring

towering is not a noun while soaring is a noun.

Word	Noun	Adjective	Verb	Adverb
towering	No	Yes	No	No
soaring	Yes	Yes	No	No

As adjectives, towering and soaring are synonyms defined as:

towering and soaring: of imposing height; especially standing out above others

Other synonyms of towering include eminent, lofty.

towering (noun)	soaring (noun)
	the activity of flying a glider

towering (adjective)	soaring (adjective)
of imposing height; especially standing out above others	of imposing height; especially standing out above others
	ascending to a level markedly higher than the usual