If your asking what *pachyderm means.
then it means a very large animal with thick skin, like an elephant or rhino.
The contributing factor that lead to xenophobia is sexism and racism which has its roots in the failure to accept "others" mixed with misguided notions about superiority of self. fragile self is constantly threatened by the potential power of the other, whether numerical; social, political or
economic.
You look around the words or look it up,
I don't trust you after the last one ...