Correction: What you want to ask is whether the English word slat is a countable noun? The English word slat is a countable noun. The English word slat refers to salt (a compound of metal and acid) as a countable noun and salt as an uncountable noun in chemistry. The noun explanations of salt are: funny; A substance that tastes or looks like salt; Something that adds interest and liveliness. Verb explanations of salt are: (spreading like salt); Make it more interesting; Season with salt; Sprinkle salt (melt ice and snow) on the road. The plural form of salt is salt. Countable nouns are nouns that can be used for counting. Countable nouns have singular and plural forms, and uncountable nouns cannot be directly used for counting. Countable nouns can be preceded by specific numbers to indicate the specific quantity, and uncountable nouns are usually preceded by unit words +of to indicate the quantity. When a countable noun is the subject, the singular and plural of the predicate verb are the same as those of the subject.