It may be worth considering that the answer may not be as significant as some might guess. GATE is an exam that tests if you're ready for graduate school. Part of being ready for a specialized field is being fluent in the vocabulary and parlance used in that field, as this enables rapid learning and smooths communication. That you can understand the ideas if they are restated and re-expressed in a form more familiar to you is not as helpful as it sounds if you cannot engage with your peers without laborious translations. Have you ever tried to discuss imperative programming with someone who only knows functional programming, or the converse?
Medical, legal, chemical, and other fields have evolved conventions of specialized vocabulary for the same reasons. They make it possible to have very detailed communications in dense, rapid ways.
Agian, you raise an excellent and wise point. There is definitely a great deal of learning vocabulary in something like this.