SIMILARITY
similarity
(noun) the quality of being similar
similarity, law of similarity
(noun) a Gestalt principle of organization holding that (other things being equal) parts of a stimulus field that are similar to each other tend to be perceived as belonging together as a unit
Source: WordNet® 3.1
Etymology
Noun
similarity (countable and uncountable, plural similarities)
Closeness of appearance to something else.
(philosophy) The relation of sharing properties.
(maths) A transformation that preserves angles and the ratios of distances
Synonyms
• resemblance
Antonyms
• difference
Source: Wiktionary
Sim`i*lar"i*ty, n.; pl. -ties. Etym: [Cf. F. similarité.]
Definition: The quality or state of being similar; likeness; resemblance;
as, a similarity of features.
Hardly is there a similarity detected between two or three facts,
than men hasten to extend it to all. Sir W. Hamilton.
Source: Webster’s Unabridged Dictionary 1913 Edition