Each group contains four unrelated words. Without rearranging the letters, change one letter in each of the words to form four related words. Example: rise,lilt,patsy,ires =rose,lily,pansy,iris
shade: literary:
a ghost.
"the ghost is the shade of Lucy Walters, first mistress of Charles II"
synonyms: ghost, spectre, phantom, apparition, spirit, phantasm etc