This seems to bother some photographers.
Is there an important distinction between "random single images" and a group of images that relate to each other? August Sander's work, "Faces of our Time", is clearly not made up from some random snaps taken in Germany. It was powerful enough to attract the hostile attention of the Third Reich.
There seem to be two approaches to observing images. The first, popular in Camera Clubs and for magazine covers, is to favour high impact. Many of us will have sat through an evening of unconnected images while someone tries to assign a numerical value to each one. (If you've tried it, you'll know how very difficult it can be.)
Verbally, we might think that this is the equivalent of listening to "Bam!" "Bash!" "Whack!" "Pow!" "Zap!" "Ker-pow!".
I'm being unfair; that's a collection of very similar expressions. Let's imagine a series of extraordinary and interesting words: "Palimpsest" "Zeitgeist" "Paradichlorobenzene" or "Ipecacuanha".
We might eventually think that we'd prefer to hear "It is a truth universally..." or "I have a dream..." or even "There was a young lady from...".
We can see that none of these words is extraordinary and yet we can also see a clear difference between the two sets. To return to Sander, none of his portraits has the impact of (e.g.) Moonrise. Now we've mentioned AA, we can recall that he issued his work in sets, too. It's a choice that we can make. Clearly that choice will influence what kind of images we produce.
What then should we call a number of photographs that are intended to be seen
together?
Paul Hill popularised the idea of the sequence, but there are other words like series, project and so on. The RPS seems to use the word panel.
All of them may suffer from photographers' collective attitude to art. Despite widespread acceptance in galleries, the "Is it Art?" debate flickers on. On the other hand, many photographers would like to avoid the pretentiousness of some kinds of art-y jargon. They may be right. But the problem remains.
As I was re-reading this, it occurred to me how extraordinary it would be if supermarkets arranged themselves according to impact. At the door would be curry powder, Marmite, bleach and firelighters. At the back we'd find sliced bread and dishcloths.
There's almost certainly more to be said on this, but not now.