Ἰουδαίων [3 verses](noun pl masc gen) "Jews" is from Ioudaios, which means "Jew." - "Jews" is from a Greek word meaning Jew. It is also the future particple of a verb meaning "to side with."

Ἰσαὰκ [5 verses] (Hebrew name) "Isaac" is from Isaak.- "Isaac" is from the Greek spelling of the patriarch's name.

ἰσάγγελοι [1 verse]( adj pl masc nom) "Equal unto angels" is isaggelos, which means "like an angel." It is an invented word from isos-, which means "equal" in size, strength, number, or rights and -aggelos, which means "messenger" and "envoys."  This word is found nowhere else in ancient Greek, used only to describe people awakened from death. It is just a coincidence that it resembles "is angels" in English. If you believe in coincidences.

ἰσχυρόν;  [2 verses](adj sg masc acc) "The strong man" is ischuros, which means, as an adjective, "strong," "mighty," and "powerful," "forcible," "violent," "severe," "excessive," and, as an adverb, "strongly, with all force, very much, exceedingly, from ischus, meaning "strength."  - "A strong man's" is from an adjective used as a possessive noun. It means "strong," "mighty," and "violent." So it means "of a strong one" or "of a violent one."

ἰσχύος  [4 verses]( noun sg fem gen) "Strength" is ischys, which means "strength of body", "might", "power", "brute force," and "motive force." -- "Mighty" is an adjective that means "strong", "mighty," and "violent." So it means "a strong one" or "the violent one."

ἰσχύοντες [8 verses](part pl pres act masc nom) "Whole" is ischyo, which means "to be strong", "to be powerful", "to prevail", "to be worth," and "to be equivalent to." -- The word translated as "whole" is a verb that means "to be strong", "to be able," or "to have powerful." It is the present plural participle of verb, used as the sentence's subject.

ἰσχυρὸς [3 verses](adj sg masc nom) "A strong man" is  ischyros, which means "strong", "mighty," and "powerful." It is from ischys, meaning strength. Here is seems as though it is used to refer to demons that control people. - -"A strong man's" is an adjective used as a noun. It means "strong", "mighty," and "violent." So it means "a strong one" or "the violent one."

ἴσους [4 verses](adv, adj pl masc acc) "Equal" is isos, which, as an adverb,  it means "equally," "in like manner," "equally,"  “fairly," "equitably," "probably," and "perhaps." As an adjective means "equal" in size, strength, number, or rights; of persons, "fair," "impartial"; of ground, "even," "flat"; generally, "just," "fair." It is also used to mean an "equal share" or "equally distributed." -- Equal" is  an adjective that means "equal" in size, strength, number, or rights; of persons, "fair," "impartial"; of ground, "even," "flat"; generally, "just," "fair." It is also used to mean an "equal share" or "equally distributed." Jesus only uses this word four times. As an adverb,  it means "equally," "in like manner," "equally,"  “fairly," "equitably," "probably," and "perhaps."

Ἰσραήλ. [11 verses](noun sg masc gen) "Israel" is Israel, which means "Israel." -- The word translated as "Israel" comes from the Hebrew, not the Greek.

Ἰσραηλείτης [1 verse](noun sg masc acc) "Israelite" is from the Greek word Israelites, which means "Israelite."  - - The Greek word is the source of the English word, but originally from Hebrew. The Greek word is spelled the same but with Greek noun endings. Jesus only uses this word once.