antonomasia /an-tə-no-māˈzi-ə/

1. The use of an epithet, or the name of an office or attributive, for a person's proper name (eg his lordship for an earl)
2. And conversely (eg a Napoleon for a great conqueror)

• snail darter
• snail darters
• snailed
• snaileries
• snailery
• snailfish
• snailfishes
• snail flower
• snail flowers
• snailier
• snailiest
• snailing
• snail-like
• snail mail
• snail-paced
• 'snails
• snails
• snail-shell
• snail-shells
• snail-slow
• snail's pace
• snail wheel
• snail wheels
• snaily
• snake