What custom field type do I use for 2 related pieces of information e.g. Skill Type + Years of Experience

Hi,

I want to put a section in registration/profile that shows experience e.g.

Language: Level

English Basic
Intermediate
Fluent

or

Industry Years

Consumer Goods 1-40

Users can then add multiple Languages or Industries - what field type do I use? I tried the documentation but it doesnt really explain what the fields do, though some are obvious.