As adjectives the difference between painy and rainy
is that painy is while rainy is abounding with rain; wet; showery; as, rainy weather; a rainy day or season.
painy
English
Adjective
.
(label) Having or showing pain.
(label) Causing pain.
rainy
English
Adjective
(er)
Abounding with rain; wet; showery; as, rainy weather; a rainy day or season.