No, not "semi-nomadic hunter-gatherer."
Prostitution and similar activities. This page is Not Safe for Work in any way, shape or form, but is legal in most of the state of Nevada.
But, yeah, while calling it the "oldest" profession might be a popular turn of phrase, it is still something of a misnomer. Seeing how prostitution is the act of trading sexual favors against something, some sort of good or service — and thereby a profession to produce said good or service — had to already exist for prostitution to come into being in the first place.
- Asian Hooker Stereotype: a prostitute of East or Southeast Asian ethnicity.
- Band of Brothels: a legal organization or union that oversees/regulates prostitution.
- This Bed of Rose's: a prostitute gives someone a place to stay.
- Cam Whore: a person who provides online Fanservice on their blog, website, YouTube channel, etc., in exchange for money or material goods.
- Camp Follower: prostitutes who follow and service soldiers during war.
- Chippendales Dancers: male strippers.
- Compensated Dating: dating older men for pay.
- Den of Iniquity: Often a brothel.
- Dirty Harriet: going undercover as a sex worker.
- Disposable Sex Worker: prostitutes double as convenient murder victims.
- Dominatrix: a woman who dominates men for Fanservice.
- Family-Friendly Stripper: a stripper wears an elaborate and theoretically sexy costume that covers just about everything.
- Happy Ending Massage: a brothel called a massage parlor.
- High-Class Call Girl: a deluxe hooker.
- Hookers and Blow: depraved drugs and sex.
- Hooker with a Heart of Gold: a kind-hearted sex worker (usually a love interest).
- Miss Kitty: a kind, responsible madam.
- Mistaken for Prostitute: someone is mistaken for a prostitute.
- Need a Hand, or a Handjob?: solicitation is mistaken for an offer of help.
- Platonic Prostitution: a character consorts with a sex worker for non-sex related purposes.
- Pleasure Planet: Some science fiction settings will have a Red Light District in space.
- Professional Sex Ed: a prostitute is hired for someone's first time.
- Red Light District: an area of a city known for sex work.
- School of Seduction: trade school for sex workers.
- Sexbot: When the sex worker is a robot.
- Sex for Services: a trade between sexual favors for non-sexual favors.
- Sex Slave: a slave whose main service is sexual labor (not technically a prostitute, as prostitute is defined by being paid).
- Sex Tourism: a character goes on vacation primarily to have sex.
- Single Mom Stripper: a single mother who moonlights as a sex worker of some kind.
- Son of a Whore: a character whose mother is or was a prostitute.
- Streetwalker: a prostitute who walks the street in order to find clients.
- Unproblematic Prostitution: being a whore is awesome!
- The Wicked Stage: a forgotten trope where theater actresses = prostitutes.