repression vs subjection

repression and subjection both are nouns.

Word	Noun	Adjective	Verb	Adverb
repression	Yes	No	No	No
subjection	Yes	No	No	No

As nouns, subjection is a hypernym of repression; that is, subjection is a word with a broader meaning than repression:

Other hypernyms of repression include subjugation.

repression (noun)	subjection (noun)
the act of repressing; control by holding down	the act of conquering
(psychiatry) the classical defense mechanism that protects you from impulses or ideas that would cause anxiety by preventing them from becoming conscious	forced submission to control by others
a state of forcible subjugation