aggressive vs fast-growing

aggressive and fast-growing both are adjectives.

Word	Noun	Adjective	Verb	Adverb
aggressive	No	Yes	No	No
fast-growing	No	Yes	No	No

As adjectives, aggressive and fast-growing are synonyms defined as:

Other synonyms of aggressive include strong-growing.

aggressive (adjective)	fast-growing (adjective)
having or showing determination and energetic pursuit of your ends	tending to spread quickly
characteristic of an enemy or one eager to fight
tending to spread quickly