Comp and Drop a line

Comp noun - Something given to someone without expectation of a return.

Drop a line and comp are semantically related in put language down on paper topic. In some cases you can use "Drop a line" instead a verb "Comp".

Drop a line verb - Communicate (with) in writing.

Comp and drop a line are semantically related in note topic. Sometimes you can use "Comp" instead a verb phrase "Drop a line", if it concerns topics such as sign, put language down on paper.