similarity
/ˌsɪmɪˈlærətɪ/noun
(pl. -ies)
1- the state or fact of being similar相似性; 类似性：
the similarity of symptoms makes them hard to diagnose.
症状相似, 使他们很难诊断。
1.1
- （一般作similarities）a similar feature or aspect相似特征（或方面）：
the similarities between people of different nationalities.
不同民族的人的相似点。