Shrimper and Weak-kneed

Shrimper noun - A vessel engaged in shrimping.

Weak-kneed and shrimper are semantically related. In some cases you can use "Weak-kneed" instead an adjective "Shrimper".

Weak-kneed adjective - Lacking strength of will or character.

Shrimper and weak-kneed are semantically related. Sometimes you can use "Shrimper" instead an adjective phrase "Weak-kneed".