In Hebrew grammar, like in English, nouns can be countable or uncountable. Countable nouns (שם ספירה) are things that we can count. They can be in the singular or the plural form. On the other hand, uncountable nouns (שם תשמיש) are usually things we cannot count. They often refer to a whole group or a large amount and do not usually have a plural form. Determining whether a noun is countable or uncountable in Hebrew can change the structure of a sentence, so it’s important to understand and practice them.