The term 'Online Comment' can be broken down into two words: 'POST' (4 letters) and 'Online' (7 letters). Posting online comments is a form of communication that has become increasingly popular in recent years. It involves leaving a comment or opinion on a website, blog, or social media platform. This type of communication allows people to share their thoughts and opinions with others in an open forum. It also allows for discussion and debate on various topics.