The 16 words below may be separated into 4 groups.
Additionally, there is a word absent from the wall which can be placed in all four of those groups.
BEAN | BEE | BACK | CAN |
EON | EYES | FLAG | HEART |
INK | PEA | QUEUE | RANGE |
RAY | SCONE | SEA | WINE |
Can you identify the four groups?
What new word can be placed in all four of those groups?