The same six letters, in the same order, can follow the initial letters below to make four valid words. Two of them are obscure, but two are very common.

B _ _ _ _ _ _ 

C _ _ _ _ _ _

F _ _ _ _ _ _

H _ _ _ _ _ _

 

HINTS:

1. The two obscure words are related to animals . 

2. One of the obscure words is also used to describe cross-country runners.

Answers:

 

1. BARRIER

2. CARRIER

3. FARRIER (horseshoer)

4. HARRIER (dog breed or distance runner)