Menstruant vs Niddah - What's the difference?

menstruant | niddah |

As nouns the difference between menstruant and niddah

is that menstruant is a woman who is menstruating while niddah is (judaism) someone whom halacha considers menstruant.

As an adjective menstruant

is menstruating.

Menstruant vs Unwell - What's the difference?

menstruant | unwell |

As a noun menstruant

is someone menstruating.

As a adjective unwell is

not well; indisposed; not in good health; somewhat ill; ailing.