Functome refers to the set of all functional interactions between the genes in a given genome. It is a concept used in systems biology, which studies the complex interactions between biological systems. There are several synonyms that can be used instead of the word functome, such as interactome, regulome, and network. The interactome refers to the full set of molecular interactions that occur within a cell or organism. The regulome, on the other hand, refers to the set of genes that are regulated by a particular transcription factor. Finally, the network is a broader term that can refer to any interconnected system, including social networks, computer networks, and biological networks.