投稿【とうこう】
contribution (to a newspaper, magazine, etc.), submission, post (on a blog, social media, etc.)
原稿【げんこう】
manuscript, copy, draft, notes, contribution
原稿用紙【げんこうようし】
Japanese writing paper (lined with a square grid, one square per character), manuscript paper
草稿【そうこう】
notes, draft, manuscript
稿料【こうりょう】
manuscript fee, payment for a piece of writing
寄稿【きこう】
contribution (e.g. to newspaper)
遺稿【いこう】
posthumous manuscripts
送稿【そうこう】
document transmission