How to translate the terms Statement and Declaration correctly?

Question

Machine translation from one language to another

I am translating an article on ST. It has 2 terms for statement and declaration. I understand perfectly well that these are different concepts. For example, here is the declaration of the program:

PROGRAM PLC_PRG
END_PROGRAM;

And here is the statement:
a := TRUE;
Unfortunately, I haven't read many technical articles in Russian, and my stock of terms and novels in Russian is weak. How to translate these 2 terms correctly? I have in my head the same word for 2 of these terms and new.

Answer 1

I consider the most appropriate in this context:
Declaration - declaration
Statement - definition

Answer 2

• Statement - instruction (literally as "statement"). Anything that ends with a semicolon ( ; ) or is a control construct (but not the keyword itself)
  
• definition - definition
  
• Declaration - declaration
  

Answer 3

statement => statement
declaration => declarations

Answer 4

Statement -> statement ;
Declaration -> declaration .
Other translation options for statement will conflict with one of the terms declaration (declaration), definition (definition), operator (operator) or expression (expression).

Answer 5

ST is structured text. It is divided into two parts: variable declarations and commands (operators).