This animation shows the growing vocabulary of a Norwegian child between 17 and 35 months. The connecting lines between the words mean that the connected words are semantically similar. Semantic similarity can be measures in different ways, i.e., associations, features and word embeddings. The semantic similarity used for this animation is based on the University of Florida free association norms (Nelson et al., 2004).
Nelson, D. L., McEvoy, C. L., & Schreiber, T. A. (2004). The university of south florida free association, rhyme, and word fragment norms. Behavior Research Methods, Instruments, & Computers, 36(3), 402–407.