【Likeness】 , 【similarity】 ,  【resemblance】 ,  【similitude】 ,  【analogy】 ,  【affinity】  are comparable when they denote agreement or correspondence or an instance of agreement or correspondence in details (as of appearance, structure, or qualities) brought out by a comparison of two or more things.

【Likeness】  commonly implies closer correspondence than  【similarity】 , which often applies to things which are merely somewhat alike.

【Resemblance】 suggests especially 【similarity】 in appearance or in superficial or external qualities.

【Similitude】 , which is somewhat infrequent and bookish, is occasionally preferred to  【likeness】  or  【similarity】 when an abstract term is desired.

【Analogy】 distinctively implies comparison of things which are unlike, not only specifically or generically, but often even in substance or essence, and it more often draws attention to 【likeness】 or parallelism in relations rather than in appearances or qualities. Philosophically, it suggests such assumptions as that similar causes will produce similar effects or that what is true in one order of existence must be true in another.

【Affinity】  adds to  【resemblance】 the implications of such a relationship as natural kinship, temperamental sympathy, similar experience, or historical influence, which is responsible for the 【likeness】 .