French Canadian here

All of our swear words are Catholic church vocabulary words. As a never Catholic I always find them hilarious when I say them. They can basically be used as stand-ins for words in the same way as we use “fuck” in English or strung together.

“Saint Ciboire” was my grandmother’s favorite when I would fuck something up.

baptême [ba.tae̯m]: "baptism"
câlice [kɑːlɪs] (calice): "chalice"
ciboire [si.bwɑːʁ]: "ciborium" or "pyx", receptacles in which the host is stored
criss [kʁɪs] (Christ): "Christ", or crisser, a more emphatic version of sacrer, both verbs meaning "to curse"
esti [əs.t͡si], [ɛs.t͡si] or ostie [ɔs.t͡si] (hostie): "host [cookie]"
maudit [moːd͡zi] (m) or maudite [moːd͡zit] (f): "damned" (or "damn")
sacrament [sa.kʁa.mã] (sacrement): "Sacrament"
saint [sẽ]: "Saint", added before others (ex. saint-simonaque, saint-sacrament, etc.)
simonaque [si.mɔ.nak] (simoniaque): from the sin of simony
tabarnak [ta.baʁ.nak] (tabernacle): "tabernacle"; typically considered the most profane of the sacres
viarge [vjaʁʒ] (vierge): "the Virgin Mary"
Moïse: Moses