i Register
In some senses, ache is marked as literary, obsolete, rare, historical. Watch for register when choosing this word.
verb
To suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed.
My feet were aching for days after the marathon.
Every muscle in his body ached.
To cause someone or something to suffer pain.
noun
Continued dull pain, as distinguished from sudden twinges, or spasmodic pain.
You may suffer a minor ache in your side.
The aches and pains died down after taking an analgesic.
noun
Parsley.