Hetero - from the Greek ἕτερος meaning different or other

Homo - from the Greek ὁμός meaning same

Irregardless of the orientation of the people involved, if its two different gendered people having intercourse it’s heterosexual intercourse. It just wouldn’t be any fun for the people involved.

Too bad they’re the Utah Mammoth now.

For context in 1525:

King of England: Henry VIII (with all the wives)

King of France: Francis I (with all the fighting the Holy Roman Empire and Pope)

King of Spain: Charles V (with all the being Holy Roman Emperor and inbreeding)

Emperor of China: Jiajing (with all the torturing and murdering dissenters)

Edit: I chose these 4 because between them they were monarchs of the 4 most powerful countries in the world at the time, especially Charles of Spain and Jiajing of China but France and England were soon poised to eclipse the others.