succor vs assistance

succor and assistance both are nouns.

Word	Noun	Adjective	Verb	Adverb
succor	Yes	No	Yes	No
assistance	Yes	No	No	No

As nouns, assistance is a hypernym of succor; that is, assistance is a word with a broader meaning than succor:

succor: assistance in time of difficulty
assistance: the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose

Other hypernyms of succor include aid, assist, help.

succor (noun)	assistance (noun)
assistance in time of difficulty	the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose
	a person or thing that is a resource that helps make something easier or possible to do
	gift of money or other material help to support a person or cause

succor (verb)	assistance (verb)
help in a difficult situation