Singular | Plural | Singular | Plural |
advice | advice | kennels | kennels |
aircraft | aircraft | knowledge | knowledge |
baggage | baggage | means | means |
bison | bison | moose | moose |
cod | cod | music | music |
crossroads | crossroads | news | news |
deer | deer | offspring | offspring |
dice | dice | public | public |
dozen | dozen | salmon | salmon |
fish | fish** | scenery | scenery |
furniture | furniture | series | series |
grouse | grouse | sheep | sheep |
gymnastics | gymnastics | species | species |
headquarters | headquarters | staff | staff |
information | information | swine | swine |
** More than one fish of the same species. Fishes are the plural of more than one species of fish. |