The words remark, remarque sound the same but have different meanings and spellings. Why do remark, remarque sound the same even though they are completely different words?
The answer is simple: remark, remarque are homophones of the English language.
The act of noticing or observing: a place worthy of remark.
To express briefly and casually as a comment.
To take notice of; observe. See Synonyms at see1.
To make a comment or observation: remarked on her academic scholarship.
A small mark or sketch engraved in the margin of a plate to indicate its stage of development prior to completion.
A print or proof from a plate carrying such a mark.
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.
If they are spelled the same then they are also homographs (and homonyms); if they are spelled differently then they are also heterographs (literally "different writing").