How do I include a term's additional fields on node display?
I've not played with semantic fields before, but I can tell you that configuring a term's display is the same as configuring a nodes display. The administration for a vocabularies display can be found at Structure --> Taxonomy --> VOCAB_NAME --> Manage Display or the path

admin/structure/taxonomy/VOCAB_NAME/display


Again, same as nodes you can configure the labeling &amp; formatting options from this area. However, the location to configure a node's display is Structure --> Content Types --> YOUR_TYPE --> Manage Display

These settings are used for Drupal's native output. Using views can bypass these settings depending on the view (fields) or can work together (full, default, teaser).