Heterosexuality is characterized by emotional, romantic, or sexual attraction exclusively or predominantly towards people of the opposite sex.
Monogamy: Monogamy refers to the practice or state of being married or partnered with one person at a time.
Polygamy: Polygamy refers to the practice or custom of having more than one wife or husband at the same time.
Cisgender: Cisgender is a term for people whose gender identity matches their sex assigned at birth.