Process of working on the vocabulary of early-age children is a complex process and is often influenced by various internal and external factors. Development of the vocabulary is possible exclusively in the conditions of the human environment. The development of children's vocabulary is needed in order for the child to express their own thoughts, feelings and needs with quality, and to make later language development more successful. The basic meanings of communication between people is speech that goes through the stages of preverbal and verbal development. Some of the exercises for working on children's vocabulary during early language development are general articulation exercises through which children become acquainted with the articulatory apparatus and articulatory gymnastics and proper performance that greatly influence further speech development. The connection between speech development and motor skills indicates the importance of a child’s motor development as a basis for speech development. There are many indicators that describe the causes and difficulties that lead to delays in speech-language development. The educator as a speech role model plays an extremely important role in the development of children’s vocabulary and achieves this through formal and informal conversation, interactive reading and storytelling, language games, and storytelling with the child. Play, as a daily and immanent child activity, in a natural and child-appropriate way helps in lexical development.