Orthology is a term typically used in genetics and bioinformatics to describe the relationship between genes or proteins from different organisms that evolved from a common ancestral sequence. However, different fields use varying synonyms for this concept. In computational biology, the term "inparalogs" refers to genes within a single genome that arose from gene duplication followed by divergence, while "outparalogs" are genes that diverged after a speciation event. In evolutionary biology, "homologous genes" or "protein homologs" are often used instead of "orthologs." In microbiology, "core genome" is used to describe the set of genes shared by all members of a given bacterial species. Overall, these synonyms for orthology serve to describe the evolutionary relationships between genes and proteins across different organisms and fields of study.