approving vs favorable

approving is a noun but favorable is not a noun.

Word	Noun	Adjective	Verb	Adverb
approving	Yes	Yes	No	No
favorable	No	Yes	No	No

approving (noun)	favorable (noun)
the formal act of approving

approving (adjective)	favorable (adjective)
expressing or manifesting praise or approval	(of winds or weather) tending to promote or facilitate
	encouraging or approving or pleasing
	giving an advantage
	presaging or likely to bring good luck or a good outcome