Gluten-Glutton | Commonly Confused Words

Gluten

/ˈɡluːtn/

A protein found in wheat and some other grains that gives dough its elasticity

Avoid gluten if you have celiac disease.Gluten-free diets are trendy in wellness circles.She's baking a cake with gluten-free flour.

This word has no synonyms

This word has no antonyms

/ˈɡlʌtn/

A person who eats or consumes excessively, especially food.

She has a gluttonous appetite for good books.He's a glutton for marine-related adventures.Their gluttony for cake was unmatched at the party.

Gluten is related to food but as a protein, glutton is related to food but as a person who eats too much.
Gluten is something found in food, whereas glutton is a person characterized by a behavior involving food.
If you hear gluten, think bread, if you hear glutton, think about excessive eating.