

私たちには共通の趣味がありますね。
二人の作品には共通の美しさがありますね。
あの人とは共通の友達がいるんですか。
"きょうつうの(共通の)" is in the lesson "Praises" (Level 36), along with 11 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.