The term 'cardinal sins' refers to seven fundamental sins in Christianity, also known as deadly sins, that are considered to be the root of all other sins. But there are other synonyms that can be used to refer to these sins. They can be called capital sins, mortal sins, or grievous sins. Another term sometimes used is the seven deadly vices. The sins include pride, envy, gluttony, lust, anger, greed, and sloth. In Christianity, committing one of these sins can lead to eternal damnation, which is why they are considered so serious. However, it's important to remember that forgiveness and redemption are always possible.