soft spot vs affectionateness

soft spot and affectionateness both are nouns.

Word	Noun	Adjective	Verb	Adverb
soft spot	Yes	No	No	No
affectionateness	Yes	No	No	No

As nouns, affectionateness is a hypernym of soft spot; that is, affectionateness is a word with a broader meaning than soft spot:

Other hypernyms of soft spot include affection, fondness, heart, philia, tenderness, warmheartedness, warmness.

soft spot (noun)	affectionateness (noun)
a place of especial vulnerability	a quality proceeding from feelings of affection or love
any membranous gap between the bones of the cranium in an infant or fetus	a positive feeling of liking
a sentimental affection