| English | Russian |
| collective behavior of large numbers of atoms | коллективное поведение большого числа атомов (Phonons are quasiparticles, because although they act like particles, but they are actually made up of the collective behavior of large numbers of atoms.  singularityhub.com Alex_Odeychuk) |
| collective excitation | коллективное возбуждение (– если это бозон; – if it is a boson MichaelBurov) |
| collective spin excitations | коллективные спиновые возбуждения (MrBonD) |