janitor

As nouns the difference between plumber and janitor

is that plumber is one who works in or with lead while janitor is someone who looks after the maintenance and cleaning of a public building.

As nouns the difference between janitor and guard

is that janitor is someone who looks after the maintenance and cleaning of a public building while guard is a person who, or thing that, protects or watches over something.

As a verb guard is

to protect from danger; to secure against surprise, attack, or injury; to keep in safety; to defend.

As nouns the difference between greeter and janitor

is that greeter is a person who greets people on their arrival 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 a noun janitor is

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

As nouns the difference between janitor and janitoring

is that janitor is (chiefly|us) someone who looks after the maintenance and cleaning of a public building while janitoring is the work of a janitor.

As nouns the difference between janitor and janitorship

is that janitor is someone who looks after the maintenance and cleaning of a public building while janitorship is the role or duration of being a janitor.