Questions about example sentences with, and the definition and usage of "Senetor"

A: Lawmaker: 議員（ぎいん）とは、国や地方公共団体に設置されている議会、及びその他の議決機関を組織し、その議決に加わる資格を有する者

Senator: 上院議員

(I don’t know the translations for the other 2- maybe someone else can help)

A: I think that "senator" would best apply to a member of the House of Councillors (upper house) and "congressman" would best apply to a member of the House of Representatives (lower house). However, I think these terms are culturally specific to the US, so I would probably say something like "a member of the Japanese House of Representatives/Councillors."

その質問に答えましたか。