noun, noun which may take the genitive case particle 'no'
resemblance; similarity; analogy
Abstract noun referring to the quality or state of being similar. Often used in formal or analytical contexts.
両者の類似性は明らかだ。
The similarity between the two is obvious.
この二つの事件には類似性が見られる。
A resemblance can be seen between these two incidents.
共通点 means 'common point' or 'shared feature', focusing on specific aspects that are alike, while 類似性 refers to the overall state of similarity.
Compound of 類似 (るいじ, 'similarity') + 性 (せい, '-ity, -ness'), forming an abstract noun meaning 'the property of being similar'.