Origin: 1350–1400; ME < AF, equiv. to
resembl(
er) to
resemble +
-ance -ance 
Synonyms:
1. Resemblance, similarity imply that there is a likeness between two or more people or things. Resemblance indicates primarily a likeness in appearance, either a striking one or one which merely serves as a reminder to the beholder: The boy has a strong resemblance to his father. Similarity may imply a surface likeness, but usually suggests also a likeness in other characteristics: There is a similarity in their tastes and behavior. 2. analogy, similitude. 3. image.
Antonyms:
1. difference.