A term with different shades of meaning must still engage isonomes. Two key mechanisms will be involved -- a procedure for signalling that two pronomes must be compared, and a procedure for specifying the kind of difference that should be detected.
NB: Relating this back to motion detection -- if "more" can have many meanings, and depends on comparisons -- should there be different qualities of motion detected by the visual system? Perhaps all of the work on different sorts of motion perception (e.g., short- vs. long-range a la Braddick) could be reformulated by considering different qualities of motion that could be analyzed! In other words, pay attention to the motion, not to the mechanisms!