Heteroepitaxy, a term predominantly used in materials science, refers to the process of growing a crystal film or layer on a substrate with a different composition. Synonyms for heteroepitaxy encompass various terminologies used in this field. One such synonym is "heteroepitaxial growth", which reflects the act of depositing a crystal layer on an unlike substrate. Another synonym is "heteroepitaxial deposition", indicating the process of adding a crystal film on a substrate with differential composition. Moreover, "heteroepitaxial film formation" can also be used as an alternate phrase to describe the creation of crystal layers on disparate substrates. These synonyms mirror the various ways scientists refer to the phenomenon of heteroepitaxy.