Abstract: In the present study, the content of the vocabularies chosen for 50-74 months-old children were determined. In this context, 3 sets of Turkish coursebooks used in private schools were chosen depending on expert opinions and examined in terms of word distribution. In these three sets, criteria were formed for content scanning based on native word categories such as; nouns, verbs, pronouns, adverbs, adjectives, conjunctions, prepositions, spoken actions/ idiomatic verbs, question words, numbers, quantifiers/ quantifiers, interjections, colors, speech phrases and reduplication. In this way, the kind of the words used in the coursebooks and their frequency were determined. The words were determined via word counting program considering their categories, and the most frequent words were determined according to the relevant age group. The results of the 50-74 months-old children’s foreign language concept table and its descriptive analysis conducted by the word counting program were examined by 3 academicians from child development department and 3 teachers working with this age group. According to the analysis, it is seen that most of the coursebooks in Turkish have respectively "Nouns", "Verbs", "Pronouns" and "Adverbs". The words that are least frequent were "Quantifiers", "Interjections", "Colors", "Reduplications" and "Speech phrases”.