a tampon (plug of cotton or other absorbent material)

capital investment

Alternative form of パンチ (“punch”) / a punch (mechanism for punching holes in paper) / punch (beverage)

sponsor (a person who provides funds) / sponsor (an advertiser in a broadcast)

half and half, fifty-fifty

(history) the Nara period (710 - 794 CE)

an ice age (period of glaciation at the poles)

a historical period where social disorder is so great due to war, disease, political disorder etc. that there is little or no cultural development; Dark Ages

zeitgeist (the spirit of the age)

Age of Enlightenment (period of history)