Advice / Piece of advice / Advise
Different formsAdvice is an uncountable noun; advise is a verb. Write “a piece of advice” for one recommendation and “please advise” when asking someone to respond.
Advice
Use when
You need the uncountable noun for guidance or recommendations collectively.
Example
“We sought Legal's advice before proceeding.”
Piece of advice
Use when
You need to count one recommendation.
Example
“She gave the project team one useful piece of advice.”
Advise
Use when
You need the verb meaning give a recommendation or information.
Example
“Please advise whether the proposed approach is acceptable.”
Quick check
please advice, an advise, advices, an advice, a useful advice
Usage note