human action vs deed

human action and deed both are nouns.

Word	Noun	Adjective	Verb	Adverb
human action	Yes	No	No	No
deed	Yes	No	No	No

As nouns, human action and deed are synonyms defined as:

Other synonyms of human action include act, human activity.

human action (noun)	deed (noun)
something that people do or cause to happen	something that people do or cause to happen
	a legal document signed and sealed and delivered to effect a transfer of property and to show the legal right to possess it