Full Idea
There is referential intentionality (that some of our thoughts refer, or are 'about' something) and content intentionality (that propositional attitudes have content or meaning, often expressed by full sentences).
Clarification
'Propositional attitudes' are hoping, believing, desiring (etc.) something
Gist of Idea
Intentionality involves both reference and content
Source
Jaegwon Kim (Philosophy of Mind [1996], p. 21)
Book Reference
Kim,Jaegwon: 'Philosophy of Mind' [Westview 1998], p.21
A Reaction
So could these be the external and internal components of content? Which might be the causal/historical component, and the descriptive component? Which might be known by (indirect) acquaintance and description?