janitor

As a noun janitor

is (chiefly|us) someone who looks after the maintenance and cleaning of a public building.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As nouns the difference between janitor and supervisor

is that janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building while supervisor is (management) a person with the official task of overseeing the work of a person or group.

As nouns the difference between janitor and housecleaner

is that janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building while housecleaner is someone employed to clean a house.

As nouns the difference between preceptor and janitor

is that preceptor is the headmaster or principal of a school, especially a private school while janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building.

As a noun janitor

is (chiefly|us) someone who looks after the maintenance and cleaning of a public building.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between waiter and janitor

is that waiter is a male or sometimes female attendant who or similar while janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building.

As nouns the difference between deckhand and janitor

is that deckhand is (nautical) a member of the crew of a merchant ship who performs manual labour while janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building.

As nouns the difference between janitor and taxonomy

is that janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building while taxonomy is the science or the technique used to make a classification.

As nouns the difference between janitor and usher

is that janitor is someone who looks after the maintenance and cleaning of a public building while usher is a person, in a church, cinema etc., who escorts people to their seats.

As a verb usher is

to guide people to their seats.

As nouns the difference between dishwasher and janitor

is that dishwasher is a machine for washing dishes while janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building.