Semantic treebanks vary in the depth of their semantic representation. Lexical ambiguity is contrasted with semantic ambiguity. Verb valence can also be described in terms of syntactic versus semantic criteria. There are several types of meanings&colon; lexical, grammatical, semantic, and pragmatic. There exist different interpretations of these semantic and ontological aspects. Under declarative memory resides semantic and episodic memory. Priming can be perceptual, associative, repetitive, positive, negative, affective, semantic, or conceptual. Deep structure was developed largely for technical reasons related to early semantic theory. WordNet is connected to several databases of the Semantic Web. The index is similar to the term document matrices employed by latent semantic analysis. Modal verbs always accompany the base (infinitive) form of another verb having semantic content. General knowledge is stored as semantic memory. Lyons emphasised the distinction between semantic fields and semantic networks. Such association rules are extractable from RDBMS data or semantic web data. Considerable progress has been made in automated scoring of divergent thinking tests using semantic approach.