Custodian
Part of speech: noun
Definition: A person entrusted with the custody or care of something or someone; a caretaker or keeper. (US) a janitor (US); a cleaner
Example sentence: 'The Custodian' was my first film, and there were so many lessons to learn in that week. It was really fun, but for me, I look at it as a training film, and I'm not really proud of my work in it.
Janitor
Part of speech: noun
Definition: someone who looks after the maintenance and cleaning of a public building.a doorman