What's the difference between janitor and janitress?

Janitor

Definition:

(n.) A door-keeper; a porter; one who has the care of a public building, or a building occupied for offices, suites of rooms, etc.

Example Sentences:

(1) When occupations were examined individually, motor vehicle operators, truck drivers, vehicle mechanics, other mechanics, and janitors were among those most likely to be diagnosed with high-grade or late-stage tumors.
(2) Raymond Bravo, 36, from San Pablo, California, who earned $10.25 an hour as a janitor for a Walmart's Richmond Hilltop Mall store in California, working 30 hours a week, said he was fired from his job after taking part in the strikes and demonstrations in June.
(3) He was magnificent as the mouldy old white-haired janitor, master of the mop and bucket, supervising an invisible gathering to hear the very last message for humanity.
(4) If he was a cartoon character, he’d be … Penry, the mild mannered janitor .
(5) Men employed as janitors and in other building service occupations showed increased relative risk for aggressive tumors (OR = 7.0, CI = 2.5-19.6).
(6) In domestic politics, Gingrich has advocated getting rid of child labour laws so that poor children can work as janitors in their schools.
(7) He plays the part of Ben, a young janitor from El Salvador who is committed to the union.
(8) The role of selective transfer of sick individuals (into, say janitoring or trucking) warrants further investigation.
(9) Another of the three, Rene Gagnon, died of a heart attack at 54, frustrated that his faded celebrity translated ultimately into no more than work as a janitor.
(10) Soon afterwards Laverty was listening to LA's left-wing radio station, KPFK, and heard that an organisation called Justice for Janitors, which represents the people who hoover the corporate carpet and scrub its toilet bowl, was holding a meeting.
(11) It’s harder when things get thrown at your family but that’s become the reality of 21st-century politics.” She recalls her own journey, from janitor’s daughter to Harvard academic to senator, thanks to opportunities she believes were lost to today’s children when Washington decided it was more important to give tax breaks to billionaires and giant corporations.
(12) Not long after the shoot finished, the janitors were on the streets of LA for real, striking and campaigning for a wage increase.
(13) Loach had hoped to release Bread and Roses at the height of the janitors' dispute last year but the release date was set.
(14) Beatty’s family has lived that history: her mother was born outside Birmingham, Alabama, and her father in New Orleans; they ultimately met in New York, where he was working as a janitor.
(15) Elevated maternal age-adjusted relative risks of Down syndrome were found for fathers employed as janitors (odds ratio [OR] = 3.26; 95% confidence interval [C.I.]
(16) I want to be a janitor in the new casino,” she said, “or maybe hand out sodas.” Elizabeth Amidon was one of a few people in line who did know exactly what she wanted to do.
(17) They also embody income inequality, earning significantly higher salaries than the people who share their workplaces as shuttle drivers, security guards, and janitors.
(18) It also might hold memories for Barack Obama and Robert Redford: the president visited the bar in 2012 and ordered a pizza, now designated the Potus pie; the actor pushed a mop as a Sink janitor in his early years.
(19) In addition to standard college newspaper fare – an essay about town-gown relations in which Miller details the “ condescension ” inherent in giving a janitor a birthday card – Miller’s 25 columns, written between September 2005 and April 2007, frequently touch on hot-button issues.
(20) Obama talked of giving "a fair shot" to black janitors, white steelworkers, immigrant dishwashers and Native American veterans.