Coot and Noddle

Coot noun - Slate-black slow-flying birds somewhat resembling ducks.

Noddle and coot are semantically related. In some cases you can replace term "Noddle" with "Coot", this nouns are similar.

Noddle noun - The upper or front part of the body that contains the brain, the major sense organs, and the mouth.

Coot and noddle are semantically related. Sometimes you can use "Coot" instead a noun "Noddle".