Key nouns

Question 1

Subject

Term

Answer 1

thing which is being discussed, considered or studied
(предмет обучения)

Definition (In English and Russian)

Question 2

Theme

Term

Answer 2

Main subject of a talk, book, etc
(тема; основная идея)

Definition (In English and Russian)

Question 3

Topics

Term

Answer 3

specific subjects that someone discusses or writes about (конкретная проблема)

Definition (In English and Russian)

Question 4

Issue

Term

Answer 4

important subject or problem
(важная тем или проблема)

Definition (In English and Russian)

Question 5

Theory

Term

Answer 5

statement of the rules on which an subject of study is based

Definition (In English and Russian)

Question 6

Model

Term

Answer 6

description of a system or process which explains how it works

Definition (In English and Russian)

Question 7

Nature

Term

Answer 7

Basic character of something

Definition (In English and Russian)

Question 8

Principle

Term

Answer 8

Basic idea that explains how something happens or works

Definition (In English and Russian)