A structure that stores knowledge with slots and default values.
Frame Representation is like a pizza order slip for facts. It has boxes for size and crust. Blank boxes get the house default.
It stores facts in slots. Expert systems and knowledge bases use it to look things up and fill common sense.
KR
Frame Representation is a classic KR method with slots.
Symbolic AI
Frame Representation writes common sense as symbols for reasoning.
Ontology
Both organize concepts and relations. Frames feel more like slot templates.
Expert System
Many early Expert Systems used frames to store domain knowledge.