highlighting vs highlight

highlighting and highlight both are nouns.

Word	Noun	Adjective	Verb	Adverb
highlighting	Yes	No	No	No
highlight	Yes	No	Yes	No

As nouns, highlighting and highlight are synonyms defined as:

highlighting (noun)	highlight (noun)
an area of lightness in a picture	an area of lightness in a picture
	the most interesting or memorable part

highlighting (verb)	highlight (verb)
	apply a highlighter to one's cheeks or eyebrows in order to make them more prominent
	move into the foreground to make more visible or prominent