get-well gift; get-well card; get-well letter
Refers to a tangible item (gift, card, letter) given to someone who is ill. Often used in the phrase 病気見舞いを贈る.
I sent a get-well gift to my friend in the hospital.
visit to a sick person; inquiry after a sick person
Refers to the act of visiting someone who is ill, or inquiring about their health. Commonly used with verbs like 行く or する.
I plan to go visit my sick grandfather tomorrow.