Allows you to set different field labels for singular and plural, depending on the number of values.
Some fields can have multiple values. See the "Number of values" setting when editing a field. If that is set, then the Field label plurals module shows a "Label to use for a single value" setting right below the "Label" textfield.
This module add a select element in entity reference fields that use an inline entity form widget that use more than one bundle. This select element change the edit form of the inline entity form when is changed.