Menstruation or period?

The taboo, stigma and restrictions associated with menstruation have been passed on to modern times.

I often wonder why people these days use the word 'period' instead of saying 'menstruation' directly. Is it because of the taboo and stigma around menstruation or its meaning as a cyclical phenomenon? Various reports have claimed that menstrual blood is considered to be dirty and contaminated, thus the imposition of restrictions to maintain discipline in the community during the Greek and Roman eras. More or less the same understanding was observed during the Renaissance era where menstrual blood was thought to be embedded with toxins. The taboo, stigma and restrictions associated with menstruation have been continuously passed on to modern times.