similarity
similar + -ity
https://gyazo.com/ecb51b29580c645cb0512f59f045a07f
source: By DEMcAdams - Own work, CC BY-SA 4.0
noun (plural similarities)
the state or fact of being similar:
«…間の/…との/…における/…の» ; U類似, 相似; C類似点, 相似点 «between/to, with/in/of» (↔ difference)
e.g. the similarity of symptoms makes them hard to diagnose.
(usually similarities) a similar feature or aspect:
e.g. the similarities between people of different nationalities.