[ljak]

> In the context of Judaism it's generally used to means Haredi Judaism, but can sometimes include other conservative groups.

That's actually a common misconception.

While all "Haredim" (ultra-Orthodox) are Orthodox Jews, the majority of Orthodox Jews do not belong to this group. In fact, nearly all Jews in Israel are technically Orthodox (that is, they have their Bar/Bat Mitzvas in Orthodox synagogues, have weddings performed by Orthodox rabbis, etc.), even if they are almost entirely secular.

In the US and Western Europe, there are two other popular denominations— Conservative and Reform.