Why call the file Treet?

I completely get why the actual file name is "Treet", and where that made up word came from. As Craig Dennis explained in the prior video, a "Treet" is a "portmanteau". Meaning, you take parts of one word, and combine them with parts of another word to form a new word. Here, and with this, the instructor used part of "Tweet" (from Twitter) and part of "Treehouse" to form this new word.

However, this prompted me to ask another question that I have been picking up on lately, and I wonder if the instructor is just using the method he is for possible ease of learning, or if it is some sort of "accepted" standard of doing something. Take a look at the code following:

Treet treet = new Treet();

I have noticed in multiple projects on here that I see those things like that being repetitive. I understand that statement to be constructing a new Treet object. In all the other courses, I would see that repetition of the same word and just thought it was syntax, but reading the Constructor documentation on Oracle, the second (and all lower cased) "treet" is actually a variable name for the new Treet object that is being constructed. Basically, that you could say "myTreetIsCooler" and it would still work fine. It is just a name.

I don't know if it was explained or not that that was basically a variable name for the object that is being constructed, but I had no idea until I saw it in the Oracle documentation. Am I tracking this, and understanding what the Oracle documentation is saying correctly, and/or is there some sort of industry accepted way of doing things like this to keep things repetitive?