the way to tell the difference between strawberry flavour and chocolate flavour
how to differentiate between a male and female
how to recognize the difference between part A and part B
この場合、次のような言い方ができますよ。
ーthe way to tell the difference between strawberry flavour and chocolate flavour
「いちご味とチョコレート味を見分ける方法」
ーhow to differentiate between a male and female
「オスとメスを見分け方」
ーhow to recognize the difference between part A and part B
「部品Aと部品Bの見分け方」
ご参考まで！
カナダ 
