1. They are

Sounds like: their, there

• daunt
• daunted
• daunting
• dauntingly
• dauntless
• dauntlessly
• dauntlessness
• dauphin
• Davalia bullata
• fellowship
• felly
• felo-de-se
• felon
• felonious
• felonry
• felony
• felsite
• felspar
• felt
• felt fern
• felt fungus
• felt hat
• felt tip
• felt up
• felt-tip pen