As adjectives the difference between oppressed and downtrodden
is that oppressed is subject to oppression while downtrodden is (figuratively) oppressed, persecuted or subjugated.
As verbs the difference between oppressed and downtrodden
is that oppressed is (oppress) while downtrodden is .
downtrodden
English
Adjective
(figuratively) Oppressed, persecuted or subjugated.
Trodden down.