JLPT N2

All JLPT 2 grammar : 一方で（一方で, ippou de）, one (esp. of two); the other; one way; the other way; one direction; the other direction; one side; the other side; one party; the other party

All JLPT 2 grammar : 或いは（あるいは, aruiwa）, or; either ... or