Public Service Announcement

The symbol # has many names, including "hash". Using a hash to make a tag word easier to search makes the whole construct a "hashtag".

Because people say things like "check out hashtag 'learn'", people inferred that the # itself was spoken as "hashtag". This has led to some confusion in certain kinds of discussion.
learn". The # is labeled "hash", the word "learn" is labeled "tag", and the whole thing is labeled "hashtag"" title="An image of the hashtag "#learn". The # is labeled "hash", the word "learn" is labeled "tag", and the whole thing is labeled "hashtag"">