

お茶とコーヒー、どちらでもいいですよ。
日曜日と月曜日、どちらでも大丈夫です。
赤と白、どちらでもいい?
"どちらでも" is in the lesson "Adjectives 5" (Level 38), along with 10 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.