tenderness vs feeling

tenderness and feeling both are nouns.

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

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

tenderness (noun)	feeling (noun)
a tendency to express warm and affectionate feeling	the experiencing of affective and emotional states
a feeling of concern for the welfare of someone (especially someone defenseless)	an intuitive understanding of something
a positive feeling of liking	a physical sensation that you experience
warm compassionate feelings	the sensation produced by pressure receptors in the skin
a pain that is felt (as when the area is touched)	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