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The point of resemblance may be internal to the realities of the compared terms.
The source distinguishes a constituent-related commonality from an attribute additional to the terms' essential natures. In the latter case a property—such as a quality or an organized configuration—can be shared without constituting what each thing is.
The necessary constraint is that the proposed point genuinely fits both terms, whether actually or within a justified imagined construction. A feature found in one object but unrelated to the other cannot simply be named as the comparison's valid point of resemblance.