I apologize if my tone came off as rude. I try to match the tenor of the person I am responding to. My question was also asked in good faith. If you understand

I apologize if my tone came off as rude. I try to match the tenor of the person I am responding to. My question was also asked in good faith. If you understand what an open compound is, but don't consider chow mein to be an open compound and have earlier compared it to being the equivalent of 'brown pants', then how do you in your understanding reconcile chow mein being in a standard English dictionary, but not brown pants?