Below are four statements about variation in word learning. Select the statement that is false. 1. Words with dense neighborhoods tend to be acquired earlier than those with sparse neighborhoods. 2. Nouns are typically easier than verbs because nouns refer to entities/things whereas verbs encode dynamic relation among entities/things 3. Words with high phonotactic probabilities tend to be acquired earlier than those with low phonotactic probabilities 4. Words with high token frequency tend to be acquired earlier than words with low token frequency