pondering vs reflective

pondering and reflective both are adjectives.

Word	Noun	Adjective	Verb	Adverb
pondering	No	Yes	No	No
reflective	No	Yes	No	No

As adjectives, pondering and reflective are synonyms defined as:

Other synonyms of pondering include brooding, broody, contemplative, meditative, musing, pensive, ruminative.

pondering (adjective)	reflective (adjective)
deeply or seriously thoughtful	capable of physically reflecting light or sound
	devoted to matters of the mind
	deeply or seriously thoughtful