"value investing" gets thrown around a lot without proper attribution. It's a very specific investment style proposed by Ben Graham. The reason why I like attribution is a) I know that it's the specific thing being talked about b) It gives credit to the originator of the ideas ( especially in the investing circles) since investing is an area where a lot of charlatans like to take advantage of gullible people by looking smart.

> the terms used above are now pretty well known to those who know something about investing

The speculation-investing definitions where "investing" is defined as "value investing" is specific to the Graham-Dodd school of thought. These are not generally-accepted economic definitions. For example, Index investing isn't "investing" per Graham-Dodd.