* όλα (óla): This is the neuter plural form, meaning "all things" or "everything." Pronounced roughly as OH-la (the "OH" as in "go").
* όλοι (óloi): This is the masculine plural form, meaning "all (masculine) people" or "all (masculine) things." Pronounced roughly as OH-lee (the "OH" as in "go").
* όλες (óles): This is the feminine plural form, meaning "all (feminine) people" or "all (feminine) things." Pronounced roughly as OH-les (the "OH" as in "go").
* πάντες (pántes): This is another word meaning "all," often used in a more formal or literary context. It's masculine plural. Pronounced roughly as PAN-tes (the "PAN" as in "pancake," the "tes" as a softer "tes").
* πᾶσαι (pâsai): This is the feminine plural form corresponding to πάντες. Pronounced roughly as PAH-sah-ee.
To choose the correct word, you need to consider the grammatical gender and number of the noun it modifies. For example:
* όλα τα βιβλία (óla ta vivlía) - all the books (neuter plural)
* όλοι οι άνδρες (óloi oi ándres) - all the men (masculine plural)
* όλες οι γυναίκες (óles oi gynaíkes) - all the women (feminine plural)
Remember that these are approximations. Listening to a native speaker is the best way to learn the correct pronunciation. You can find audio pronunciations online using a Greek dictionary or language learning app.