The endings gious and geous are illustrated in the following:

gious geous
religious courageous

Exercise 55—Peculiar Noun and Verb Endings

Nouns in ance and ence:

ance ence
acceptanceintelligence
appearancereference
annoyancepatience
acquaintance negligence
remittancediligence
ignoranceresidence

Nouns in sion, cion, and tion:

sion cion tion
exclusion coercionacquisition
aversionsuspicion precaution

Verbs in ise, yze, and ize:

ise yze ize
adviseanalyzebaptize
supervise paralyze recognize

Verbs in ceed, sede, and cede: