1) Isotopic character 
[semiotics] In a story, we detect an isotopy when there is a repetition of a basic meaning trait (seme); such repetition, establishing some level of familiarity within the story, allows for a uniform reading/interpretation of it. An example of a sentence containing an isotopy is I drink some water. The two words drink and water share a seme...
the quality or condition of being isotopic; isotopic character.