A complaint or annoyance.
A formal complaint, especially in the context of a unionized workplace.
Feelings of being wronged; outrage.
A wrong or hardship suffered, which is the grounds of a complaint.
Violation of regulations or objectionable behavior.
Something which causes grief.
An act of recommending.
A suggestion or proposal about the best course of action (with adpositions including "about" for the context and "to" for the course of action)
That which is recommended.
A commendation or endorsement.