Two Edged Words!

Which word can be joined on to the end of the first word and the beginning of the second word to form two new words?

Example:

man ? wink

Answer is hood.

man ? wink
man hood wink

The  two new words are manhood and hoodwink.

Now try these puzzles:

1) ear ? ling

2) barn ? stick

3) cause ? lay

4) light ? fly

Answer:

1) nest (earnest and nestling)

2) yard (barnyard and yardstick)

3) way (causeway and waylay)

4) house (lighthouse and housefly)