A reader asks whether a singular or plural noun should follow the construction "different kinds of."

"We feel comfortable saying 'different kinds of sandwiches' as well as 'different kinds of ice cream," writes the reader. "If 'kinds' is plural, is there a rule that says the object of the preposition should also be plural? What about 'different brands of candy' or 'different breeds of dog'? I have found examples, but no explanation of the rule. Please help!!"

"A Dictionary of Contemporary American Usage" takes the permissive route:
"The noun following 'kinds of' may be either singular or plural."

Similarly, discussing "types of," the same dictionary says, "The singular form 'type of' and the plural form 'types of' may each be followed by either a singular or plural noun." That rule invites you to rely on your own common sense.

Some words, of course, such as "ice cream," don't have an applicable plural form. We wouldn't be tempted to say "different kinds of ice creams." With this type of term, there's no confusion:
"The vicar practiced many forms of saintliness."

Our next tip examines the forms that should follow the singular "type of" and "kind of" and answer's the reader's question about "different breeds of dog."