faintness vs feeling

faintness and feeling both are nouns.

Word	Noun	Adjective	Verb	Adverb
faintness	Yes	No	No	No
feeling	Yes	No	No	No

As nouns, feeling is a hypernym of faintness; that is, feeling is a word with a broader meaning than faintness:

faintness (noun)	feeling (noun)
the quality of being dim or lacking contrast	the experiencing of affective and emotional states
barely audible	an intuitive understanding of something
the property of being without strength	a physical sensation that you experience
the trait of lacking boldness and courage	the sensation produced by pressure receptors in the skin
a feeling of faintness and of being ready to swoon	a vague idea in which some confidence is placed
	the general atmosphere of a place or situation and the effect that it has on people