How to say "End" in Japanese

When translating "end" into Japanese, you must choose carefully between おしまい and とことん. In Japanese, おしまい (おしまい (oshimai)) is typically associated with "the end, finish" (Syllabus Level: N3) and represents Informal way to say "the end" or "it's over." Often used with children or in casual contexts. Can also mean "that's all.". On the other hand, とことん (とことん (tokoton)) maps to "to the end, thoroughly, completely, all the way" (Syllabus Level: N1) and represents Implies pursuing something to its absolute limit, without compromise, until nothing more can be done or achieved. Often used with verbs like 調べる. A literal translation of "end" can often sound unnatural to native Japanese speakers if mixed up!