Как по Английски будет schlüsselwort

noun

A joining or merging of different parts or qualities in which the component elements are individually distinct.

Примеры использования:

A magnificent combination of drama, dance, and music

noun

A system of words, letters, figures, or symbols used to represent others, especially for the purposes of secrecy.

Примеры использования:

The americans cracked their diplomatic code

verb

Convert (the words of a message) into a code so as to convey a secret meaning.

Примеры использования:

Only mitch knew how to read the message—even the name was coded

noun

A word or concept of great significance.

Примеры использования:

Homes and jobs are the keywords in the campaign