Children’s first words are remarkably consistent over languages and over time: They first talk about people (dada, mama), food (juice), body-parts (eye), clothing (sock), animals (dog), vehicles (car), toys (ball), household objects (key), routines (bye), and activities (uhoh, up). Their first productions emerge between 12 months and 24 months, and they attain some 50 words in production about 6 months later. Earlier claims about a vocabulary spurt may rather reflect increased motor skill that aids production. Do children learn to produce nouns before verbs? The proportions of nouns and verbs differ by context, e.g., toy play versus book reading. Spontaneous speech samples and parental checklists of vocabulary often differ. Overall, production lags behind comprehension. This leads to communicatively driven overextensions in production until 2;6 or so, as well as reliance on general purpose terms (do, go, that). As children add more words, they stop using earlier overextensions. Early word meanings are based on children’s existing conceptual and perceptual categories, based on their experience of the world so far. And as they take different perspectives, they begin to use of different words for the same referent (animal, dog, pug; do, mend).