Compare

Hold'em, Omaha, PLO5, Short Deck

Hole cards, table size and betting, taken only from the game pages.

Page
From the club game pages
ItemTexas Hold'emOmahaPLO5Short Deck
Hole cards2452
Deck52525236, 2–5 removed
Cards you must useAny mix2 hole + 3 board2 hole + 3 boardAny mix
Players2–92–92–62–6
BettingFour roundsSame order as Hold'emPot limitNo separate label
Where to startStart hereAfter Hold'emHigh varianceAfter the ranking change

On the same board the Omaha nuts are not the Hold'em nuts, because exactly two of four hole cards must be used. The short reference is the nuts page. The longer note is the comparison article. The changed Short Deck order is in the rankings article.

Questions

No. Exactly two hole cards and exactly three community cards.