I think the word has Japanese origins, but is considered an English word. Remember, English has many loan words, and Tsunami is just one of them, but loan word or not, if it's in the English dictionary, its sure an English word.

can you hear the silence

I see, didn't know about that

I see, should've thought about that. I'm sorry for not considering that.

No offense, but I think Stalin's name is spelt Stalin