The following word pairs share an interesting similarity. Can you determine what it is?

LAWS - ROYAL

NOISE - SNOW

HOLE - JET

CARNATION - TICKLED

GRASS - BOWLING

HINT:

The answer has to do with colors.

Answer:

The first word can be preceded by a color word, and the the second word can be followed by the same word.

BLUE LAWS - ROYAL BLUE

WHITE NOISE - SNOW WHITE

BLACK HOLE - JET BLACK

PINK CARNATION - TICKLED PINK

GREEN GRASS - BOWLING GREEN