Meaning of the word "like chalk and cheese" in English

What does "like chalk and cheese" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

like chalk and cheese

US /laɪk tʃɔːk ænd tʃiːz/
UK /laɪk tʃɔːk ænd tʃiːz/

Idiom

used to emphasize that two people or things are completely different from each other

Example:
My brother and I are like chalk and cheese; he's very outgoing, and I'm quite shy.
Their political views are like chalk and cheese.