Wikipedia makes a good video. There is great commentary on the website that makes good good discussions. Read it. What is your opinion.

For some people there is a distinction between girlfriend / boyfriend and girl friend / boy friend (separate words), in the sense that the latter does not assume a relationship, in the first example. Use also the words ladyfriend, ladyfriend, guyfriend, friend boy. or friend girl.
I used lady friend in my personal life (but apparently incorrectly according to Wikipedia). Which women are my male friends?

Since the quoted fragment contains the word proof, it is likely to have been made up of some scientific text. Why is the word “remark” used in scientific literature to mean observation or comment_sic? What can be written as a word without much detail? “less” means in terms of complexity, not in terms of soundness or usefulness; a remark can be, as suggested by your text, very handy, or a sentence may be boring without complexity? Is all the text in the

context correct?

While either coordinations are characteristically binary, multiple ones like either Kim, Pat, Alex are also possible. Unusually

stigmatized, (multiple correlative like either), can add clarity to constructions whose complexity would otherwise cause confusion. Such constructions are often used even in careful written English, eg in the rubric of an examination paper: Candidates are required
to answer EITHER question 2 OR Question 4 or an equivalent question for the first time. Question 1 or Question 2 requires additional clarification. 2:

3: 4: 4:

Can you identify the title that you mean with “Balance”? Because it seems you talk about an abstract. In science or engineering, a title sounds like “Creation of a subset…”.
Indeed, extract is commonly used in sampling, and you can simply say we sample/draw a sample Get is informal and is not
preferable in formal literature.
Construct has a nuance of elaboration, usually as a consequence of an algorithm or procedure in which all steps are given.
So Obtain is very common and has a formal

touch.