amiableness vs friendliness

amiableness and friendliness both are nouns.

Word	Noun	Adjective	Verb	Adverb
amiableness	Yes	No	No	No
friendliness	Yes	No	No	No

As nouns, friendliness is a hypernym of amiableness; that is, friendliness is a word with a broader meaning than amiableness:

amiableness: a disposition to be friendly and approachable (easy to talk to)
friendliness: a friendly disposition

amiableness (noun)	friendliness (noun)
a disposition to be friendly and approachable (easy to talk to)	a friendly disposition
	a feeling of liking for another person; enjoyment in their company