Not every association with a word is taḍammun. The indicated element must belong inside the assigned meaning, rather than merely accompany it in experience.
“House” normally indicates a complete dwelling. An analysis may isolate an internal component of the relevant concept, but the boundaries of such ordinary-language concepts can vary with usage.
The classical example “insān = ḥayawān nāṭiq” is clearer for formal study because the essential analysis has already been specified. Ḥayawān and nāṭiq belong within that analysis. A merely associated external property is not an internal component and should not be misclassified as inclusion.