Exon trapping is a molecular biology technique that is used to isolate and characterize DNA fragments that contain exons, the coding region of a gene. While there are no direct synonyms for this technique, there are related methods that can be used in conjunction with exon trapping to isolate and study specific genes. Some of these methods include transcript mapping, which identifies the location of mRNA transcripts within a genome, differential DNA display, which detects differences in gene expression among different samples, and cDNA cloning, which involves the isolation and amplification of specific coding regions of a gene. These methods can be used in combination with exon trapping to gain a more comprehensive understanding of gene structure and function.