Some people don't know how to talk

They treat discussions like a competition, instead of a mutual clarification
If you ask the definition of something they go "hah! you don't know this? then you're a noob and I'm obviously more knowledgeable than you, and thus I have won! now shoo", when maybe you just want to know what is their definition, to compare with yours and clarify what might be your and his misunderstanding

>>2

PS: discussions are inherently emotional,

I don't think you understand the words you are using or the unproven presupposition you just presented here.