Puffer and Yes-man

Puffer noun - Any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe; several species contain a potent nerve poison; closely related to spiny puffers.

Yes-man and puffer are semantically related. In some cases you can use "Yes-man" instead a noun "Puffer".

Yes-man noun - A person of unquestioning obedience.

Puffer and yes-man are semantically related. Sometimes you can use "Puffer" instead a noun phrase "Yes-man".