The duo were both sin-binned as Castleford were beaten by Hull KR on Friday night.
Faraimo has been handed a two-match penalty notice for a Grade B Reckless High Tackle while Watts has been given a one-match penalty notice for a Grade A Careless High Tackle.
Both players were yellow carded in the first half of the Tigers' defeat to the Robins as their winless start continued under Lee Radford.
Elsewhere, Michael McIlorum of Catalans Dragons has been charged with a Grade A Careless High Tackle and has been issued with a one-match penalty notice.
St Helens Curtis Sironen has also been given a one-match penalty notice after being charged with a Grade B Late hit on passer during Saints' win over Wakefield Trinity.
Salford Red Devils have had two players banned following their loss against Hull FC with Ryan Brierley and Dan Sarginson both issued with a one-match penalty notice.