[Supperman]

Quote susan53

No - you can't say I have three vocabularies. Remember what I said - the plural is only used as (and rarely) a synonym for dictionaries or in technical terminology like computer programming. (Meaning 3 above). You'd have to say : I have three languages.

Thank you, I got it. (Maybe, this time. )


In brief, I don't have to use the plural of that word in my daily life myself, because I'm not a computer programmer or a dictionary-editor.

I only have the opportunity to read/hear the plural when I read/hear something related to dictionaries/computer programming.

I tried to make such an unlikely-in-my-daily-life context;
C3PO (of STAR WARS) is a human-shaped translation-droid, which can speak thousands of languages fluently. Its program has been installed thousands of vocabularies throughout the galaxy.

I hope my understanding is corrected toward the right track this time.