Chemical agent and Wetter

Chemical agent noun - An agent that produces chemical reactions.

Wetter and chemical agent are semantically related. In some cases you can replace term "Wetter" with "Chemical agent", this terms are similar.

Wetter noun - A chemical agent capable of reducing the surface tension of a liquid in which it is dissolved.

Chemical agent and wetter are semantically related. Sometimes you can use "Chemical agent" instead a noun "Wetter".