If your initial reaction to the first two sentences above is to think “Ugh”, you are in good company. They are offensive to the mind. “A new interactive what?” the brain protests. Increasingly it seems, however, the adjective is the new noun. Things that describe things are now the things themselves. It is not a “blue something”, it’s just a “blue”. But the last sentence does not offend. What was once an adjective has become a noun, but it is accepted. Why is this? Usage leads to acceptance, It can be hard to tell at what point a phrase or word is in common usage, If a word or phrase interferes with effective delivery of the message, its position should be considered. For more information, contact Research Editors.