What is the difference in meaning & usage between ( explaining / explanation )?
And also between ( expiry / expiration )?

THANKS.

Question

What is the difference in meaning & usage between ( explaining / explanation )?
And also between ( expiry / expiration )?

THANKS.

Answer

"explaining" is the present participle of the verb "explain".  "explanation" is the noun related to "explain". If you are confused about a specific sentence, I suggest that you post it.