1. (n.) The quality of being similar or like; resemblance; likeness; similarity\; as, similitude of substance.

2. (n.) The act of likening, or that which likens, one thing to another; fanciful or imaginative comparison; a simile.

3. (n.) That which is like or similar; a representation, semblance, or copy; a facsimile.

accordance affinity agreement alikeness allegory alliance ally alter ego analogon analogue analogy aping approach approximation assimilation associate balancing brother certified copy close copy close match closeness cognate community companion comparability comparative anatomy comparative degree comparative grammar comparative judgment comparative linguistics comparative literature comparative method compare comparing comparison complement conformity confrontation confrontment congenator congener contrast contrastiveness coordinate copy copying correlate correlation correlative correspondence correspondent counterfeit counterpart dead ringer distinction distinctiveness double duplicate ectype effigy equivalent exact likeness fair copy faithful copy fake fellow forgery icon identity idol image imitation kindred spirit like likeness likening living image living picture match matching mate metaphor mimicking miniature mirroring model near duplicate nearness obverse opposing opposition parallel parallelism parity pasticcio pastiche pendant phony photograph picture portrait proportion reciprocal reflection relation replica representation resemblance rubbing sameness second self semblance shadow similarity simile simulacrum simulation sister soul mate spit and image spitting image such suchlike tally the like of the likes of trace tracing trope of comparison twin very image very picture weighing