Different usage of "word" and "words" in a particular sentence

Question

I understand that "words" is plural form of "word".

So can we say:

Ram was true to his words.

Answer 1

This usage does not refer to the words specifically, but the confidence behind them. As a concept, you would not pluralize it. See word:

3) a promise, affirmation, or assurance " ⇒ to give a person one's word"

So:

Ram was true to his word.