activity vs deed

activity and deed both are nouns.

Word	Noun	Adjective	Verb	Adverb
activity	Yes	No	No	No
deed	Yes	No	No	No

As nouns, deed is a hypernym of activity; that is, deed is a word with a broader meaning than activity:

Other hypernyms of activity include act, human action, human activity.

activity (noun)	deed (noun)
any specific behavior	something that people do or cause to happen
the trait of being active; moving or acting rapidly and energetically	a legal document signed and sealed and delivered to effect a transfer of property and to show the legal right to possess it
an organic process that takes place in the body
a process existing in or produced by nature (rather than by the intent of human beings)
the state of being active
(chemistry) the capacity of a substance to take part in a chemical reaction