The main difference is that sick also has the specific underlying meaning of nauseated (for example: she drank too much and was sick all over everything), while ill is unspecified; and that when used as synonyms, ill is considered more formal or polite.
a person who is receiving medical care is "patient" the "sick" is people who are ill
In American usage the two are synonymous except that ill often suggests suffering from a disease or ailment, while sick often suggests feeling disgust and/or nausea, as in "That makes me sick."
The homophone for "ill" is "eel."
He's not sick. He's ill.
Bamb-Ill is a play on the character named Bambi. Ill is another word for sick.
Sick or ill, the words are to an extent interchangeable; one can say he is sick or he is ill. Although I personally would be more concerned about ill than about sick. Ill suggests something serious like a stroke whereas sick suggest a sore throat.And feeling sick means feeling nauseous whilst feeling ill means feeling unwell.So overall , ill is more serious, sick is more trivial.But non-humans tend only to be sick eg a sick cow, a sick joke, a sick economy.The above answer is true for American English; in Britain, you'd say "ill" when you have any kind of bodily distress, but "sick" usually means stomach sickness and vomiting.
Ill
The synonym of ill is also "sick", meaning; not in full health.
That your very sick or seriously ill.
Frail-weak Sick-ill
you know when u are ill because you feel sick
Tree is tree and horse is horse.And horse is sick and tree is not.