I have started with short answers, to your various doubts, then I have elaborated my answer to give you clear picture.
Is Moksha the end of samsara[sic]: No, it is not. You can achieve Moksha and still live in samsara.
i.e: the end of reincarnation, the end of repeated cycles of reincarnation.[sic]`: Yes, and No.
Or it is the end of suffering[sic]: Yes ...