Our study is based on a corpus of Fairy Tales, which will later be compared to an oral corpus when the latter is completed. We argue that lexical knowledge and semantic associations discovered in this corpus will not differ greatly between writing and speech. Fairy Tales constitute privileged material for teachers and psychologists who argue that they play a crucial role in child socialization and structuration of concepts. To spot child language specificities, we provide a contrastive analysis of semantic preferences according to production (child VS adult authored text) and to reception (child VS adult destined text). We use a shallow ontology to compare verb constraints on specific syntactic positions in child VS adult texts. Preliminary results show, as expected, a significant difference in terms of reception, though questioning the idea that adult language is much more constraining, while differences in terms of production are less obvious and call for a detailed qualitative study.