Masculine nouns are made plural by adding the suffix ים (iym) to the noun. Feminine nouns are made plural by adding the suffix וֹת (ot) to the noun. As an example, the masculine noun עץ (eyts) means “tree” while עץים (eytsiym) means “trees.” The feminine noun רוּח (ru'ahh) means “wind” while רוּחוֹת (ruhhot) means “winds.”

There are a few exceptions to these gender specific suffixes. For example, אב (av - father) and אוֹר (or - light) are both masculine nouns yet are written in the plural as אב וֹת and אוֹר וֹת. While they use the feminine suffix, they still remain masculine.

There is one other type of plural called a “dual plural.” This plural form also uses the ים suffix but instead of being pronounced as iym it is pronounced yim. Generally, dual plurals are used for things that come in pairs such as יָדַיִם (hands) and עַינַיִם (eyes).

Some nouns are always written in the plural form. The three most common are פָּנִים (face), שָׁמַיִם (sky, interestingly a dual plural) and אֱלֹהִים (God).

If the first word in a construct is a masculine plural word the letter ם is dropped. A Biblical example of this would be the construct "sons of Jacob." The Hebrew word for "sons" is בֵּנִים but, when used in the construct it becomes בְּנֵי יַעֲקֹב (sons of Jacob).