The difference between Healthy and Ill

When used as adjectives, healthy means enjoying health and vigor of body, mind, or spirit: well, whereas ill means evil.

Ill is also noun with the meaning: trouble.

Ill is also adverb with the meaning: not well.

check bellow for the other definitions of Healthy and Ill

Healthy as an adjective:

Enjoying health and vigor of body, mind, or spirit: well.

Examples:

"ant unhealthy"

"He was father to three healthy kids."
Healthy as an adjective:

Conducive to health.

Examples:

"synonyms: healthful"

"ant unhealthy"

"A healthy diet and exercise can help to maintain proper weight."
Healthy as an adjective:

Evincing health.
Healthy as an adjective (figuratively):

Significant, hefty; beneficial.

Examples:

"a healthy respect for authority"

"Sam unwrapped the sandwich and took a healthy bite out of the middle."

Ill as an adjective (obsolete):

Evil; wicked (of people).
Ill as an adjective (archaic):

Morally reprehensible (of behaviour etc.); blameworthy.
Ill as an adjective:

Indicative of unkind or malevolent intentions; harsh, cruel.

Examples:

"He suffered from ill treatment."
Ill as an adjective:

Unpropitious, unkind, faulty, not up to reasonable standard.

Examples:

"'ill manners; ill will"
Ill as an adjective:

Unwell in terms of health or physical condition; sick.

Examples:

"I've been ill with the flu for the past few days."
Ill as an adjective:

Having an urge to vomit.

Examples:

"Seeing those pictures made me ill."
Ill as an adjective (hip-hop slang):

Sublime, with the connotation of being so in a singularly creative way.
Ill as an adjective (slang):

Extremely bad (bad enough to make one ill). Generally used indirectly with to be.

Examples:

"That band was ill."

Ill as a noun (often [[pluralize]]d):

Trouble; distress; misfortune; adversity.

Examples:

"Music won't solve all the world's ills, but it can make them easier to bear."
Ill as a noun:

Harm or injury.

Examples:

"I wouldn't want you to do me ill."
Ill as a noun:

Evil; moral wrongfulness.
Ill as a noun:

A physical ailment; an illness.

Examples:

"I am incapacitated by rheumatism and other ills."
Ill as a noun (US, slang):

PCP, phencyclidine.