Awhile vs A While

Awhile (adverb) - for a while; for a short time

•    The guests planned to stay awhile.

A while (noun) - for a short time; when while is used as the object of the preposition (for a while) then the “a” is separated from the “while”

•    The guests planned to stay for a while.
Borrow vs Lend

Borrow (verb) - to take or accept something for a short time with the intention of returning it to its rightful owner

•    May I borrow a pencil, please?

Lend (verb) - to give something for a short time with the intention of getting it bac

•    Would you please lend me a pencil?

Source: www.grammar.yourdictionary.com