Deutschland is the word for Germany. Since there aren't two countries named "Germany", there isn't a plural.
This is actually not correct. Until reunification in 1990 there were two countries called Germany. If referring to both of them you had to either address them as the GDR and the FRG or you spoke of the "two Germanys".
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
the plural word is comedones
No, the plural of problem is problems.
The plural word for batch is batches.
The plural of diary is diaries.
The word crises is a plural word; it is the plural form of the word crisis.
Germany is a country, and it is a singular noun. But back when there was an East and a West Germany, sometimes you might hear people refer to the "two Germanies." (In other words, you would create the plural following the rule for any word that ends in Y-- story/stories, for example.)
There is no plural word for if.
The plural form for the demonstrative pronoun this is these.
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
The plural word of delay is delays.
the plural word is comedones
No it's a singular word. A plural word would be "have".
Leukocytes is the plural of leukocyte
The plural noun is raisins.
The plural of "classification" is "classifications."
The correct plural for the word "wolf" is "wolves."