The four major sign-based types of lexical information

Internal syntactic:

The immediate dominance combinatorics of word syntax constituents in inflection and word formation (derivation and composition)

External syntactic:

The distribution of words in phrasal contexts, i.e. syntactic valency, subcategorisation, argument structure, and the determination of distributional properties by the distributional properties of constituents, e.g. argument inheritance from the head of a compound or derived word

Semantic:

Interpretation of word structure in terms of semantic objects, events and relations, such as semantic valency and argument structure, and quantifier structures

Phonetic:

Interpretation of word structure in terms of phonetic objects, events and relations, such as articulatory and acoustic patterns.