The words soar, sore sound the same but have different meanings and spellings. Why do soar, sore sound the same even though they are completely different words?
The answer is simple: soar, sore are homophones of the English language.
To rise, fly, or glide high and with little apparent effort.
To climb swiftly or powerfully.
To glide in an aircraft while maintaining altitude.
To ascend suddenly above the normal or usual level: Our spirits soared. See Synonyms at rise.
Painful to the touch; tender.
Feeling physical pain; hurting: sore all over.
Causing misery, sorrow, or distress; grievous: in sore need.
Causing embarrassment or irritation: a sore subject.
Definitions from The American Heritage® Dictionary of the English Language, 4th Edition and Wordnik.
Homophones (literally "same sound") are usually defined as words that share the same pronunciation, regardless of how they are spelled.