This article aims to demonstrate the frequency of constructional subschemas, rather than lexical items, can affect acceptability judgment. Cognitive Grammar (cf. Langacker 1987, 2008) theoretically predicts that the frequency of constructional subschemas has a greater effect on recognition of well-formedness of linguistic expressions than the frequencies of lexical items that compose the expressions. To verify this, the experiment was conducted in which participants were asked to rate the acceptability of coined Japanese N-N compounds on a scale from 0 to 5, and its result was subsequently analyzed using a multiple regression analysis. 524, 307 patterns of the statistically significant models show the statistic significance of the frequency of constructional subschemas to predict the distribution of acceptability, whereas the frequencies of the component nouns are not significant in this respect.