How do variants and 'data matching' translate in relation to functional programming languages?

Question

Functional programming

There was a glitch with the translation of the next part about Ocaml. Problems with terms:

variation, data matching, pattern matching.

Context of use: www.ocaml-tutorial.org/data_types_and_matching

Answer 1

pattern matching - matching samples / patterns (almost everywhere I met such a translation)

Answer 2

Isn't a direct translation suitable in this context:
pattern matching - matching in actions; according to the operations performed
variants - the options are
concise and display the meaning)

Answer 3

I'm sorry, but we need established terms. Because if we translated touple like that, we would never get quite the standard term “tuple”. pattern matching will be something like “pattern matching”, but, I repeat, I don’t want to invent terms in an area that has long been established in the Russian language.