affection vs philia

affection and philia both are nouns.

Word	Noun	Adjective	Verb	Adverb
affection	Yes	No	No	No
philia	Yes	No	No	No

As nouns, affection and philia are synonyms defined as:

Other synonyms of affection include affectionateness, fondness, heart, tenderness, warmheartedness, warmness.

affection (noun)	philia (noun)
a positive feeling of liking	a positive feeling of liking