Odd Man Out
Comb.
Brush.
Razor.
Razor.
Combs and brushes style hair; razors remove hair.
Salmon.
Crab.
Tuna.
Crab.
Crab is the only shellfish on the list.
Door.
Key.
Window.
Key.
Doors and windows are a permanent part of a house; a key can be removed.
Salt.
Rubber Duck.
School Bus.
Salt.
Rubber Ducks and School Buses are yellow; salt is white.
Independence.
Memorial.
Groundhog.
Groundhog.
Memorial Day and Independence Day are patriotic holidays; Groundhogs Day is not.