Please define some basic terms related to 3D engine for me

[Tyn]

I think a better analogy would be building a table from reclaimed wood. You may have the plans but if you don't know what the tools you need look like, say a planer or a set square, you wouldn't be bugging a chippy about what does what. You would get a book from the library, look at internet tutorials or take a course in College/Uni.