What is the difference between Of and Off?

Of and off are often used incorrectly by some people as they probably think they have the same meaning or grammatically correct to use especially in (written) sentences. Of, with the single F, is a preposition to show possession or ownership.

Examples are the car of my dad, the name of the company, and bags of the students. Off, with the 2 F’s, on the other hand, means away from a thing, place, or person such as these examples: switch off, hands-off, and ran off. Off can be an adjective, adverb, preposition, and a verb. Here is a sample sentence where these two are used at the same time: I switched off the engine of my brother’s car when he hastily went inside the house.

Some people have problems with using of and off in a sentence because they do not understand how these words should be used. One of the main differences is how they should be pronounced. “Of” should be pronounced with a very slight v sound towards the end while “off” should be pronounced with the f sound. Of is normally used as a preposition while off is used as an adverb. Of is also used in order to show possession while off is considered to be the opposite of on. One example of using of is this sentence: “She is under a lot OF stress.” An example of using “off” is this sentence: “Turn off the lights.”