educational activity vs teaching

educational activity and teaching both are nouns.

Word	Noun	Adjective	Verb	Adverb
educational activity	Yes	No	No	No
teaching	Yes	No	No	No

As nouns, educational activity and teaching are synonyms defined as:

educational activity and teaching: the activities of educating or instructing; activities that impart knowledge or skill

Other synonyms of educational activity include didactics, education, instruction, pedagogy.

educational activity (noun)	teaching (noun)
the activities of educating or instructing; activities that impart knowledge or skill	the profession of a teacher
	the activities of educating or instructing; activities that impart knowledge or skill
	a doctrine that is taught