In a study of very young children's pronunciation of nouns and verbs, ten children aged 20 to 25 months were exposed to experimental nouns and verbs, which had not yet been comprehended or produced by the children. Each of the objects and actions was given an experimental name based on phonemes in the children's speech. These objects and actions were named six times during each child's session. Three of the namings were paired directly with the object or action, and three were in comprehension and production probes. A production posttest was then given, in the same form as the production probe. Two types of response, spontaneous productions during the exposure sessions and responses during the posttest, were analyzed. Without exception, in both spontaneous response and posttest response, the children produced nouns more accurately than verbs, that is, with a higher percentage of correct consonants. This finding suggests an interaction between semantic and phonological domains. Further study of this and other possible language domain interactions is recommended. (MSE)