educational activity vs didactics

educational activity and didactics both are nouns.

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

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

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

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

educational activity (noun)	didactics (noun)
the activities of educating or instructing; activities that impart knowledge or skill	the activities of educating or instructing; activities that impart knowledge or skill