This is the 3921st most frequent Japanese word.
コウモリ
Bat (the flying mammal).
Here, 'コウモリ' directly refers to the animal 'bat', emphasizing its characteristic as nocturnal.
コウモリは夜行性の動物です。
The bat is a nocturnal animal.
In this context, 'コウモリ' is used metaphorically to represent shifting or flexible behavior, drawing upon cultural associations with the animal.
その人はコウモリのように、状況次第で意見を変えます。
That person changes opinions like a bat depending on the situation.
This usage specifies the habitat of 'コウモリ,' focusing on factual description.