The plural of "lichen" is "lichens." It's deceptively easy. :-)
There is no plural form for the word, countries. This word itself is a plural.
The plural of diary is diaries.
The plural form of the word 'deed' is 'deeds'.
The plural form of the word gelato is gelati.
The plural form of the word neurosis is "neuroses".
Singular: Lichen - "the lichen seemed to be related to that observed on the other branch." Plural: Lichens - "wow... look at all those lichens!"
The plural form for the demonstrative pronoun this is these.
The plural form of the word "inferno" is "infernos."
The plural form of the word "ranch" is "ranches."
There is no plural form for the word, countries. This word itself is a plural.
The plural form is data.
There is no plural word for if.
The plural form for the word 'pioneer' is pioneers.
The plural form of the word "baby" is "babies."
The plural form of the word "pharynx" is "pharynges."
The plural form of vow is vows.
In Chinese, the plural form of the word "minute" is "分钟" (fēnzhōng).