semantics or non communication as a signify of a language?

Perhaps not the best of headline for this post..
Have began Semantics by FR Palmer and intriguingly in my view, he elaborates about the difference between communication systems, eg red traffic light is to stop, and languages – where red, for example, can and does mean more than just stop..

Hence when I noticed a bit of blurb re 2040 exhibition in jaus art gallery that contains:
“..Artists take a central role in how communication content is delivered..”
Have began to question whether there isn’t here a bit of a conflation regarding artists being manifested. If artists communicate, can they really develop a language – or perhaps a sign system?

how to kill a us president without taking their life while being a mass murderer?

How do I imagine a couple being accused of being a mass murderer by killing bush/obama/clinton – while the accuser acknowledging the people are still alive?
I think this will be an interesting and worth while search in itself!
However, or it might be an element of the search, the question of act & language might be interesting/relevant here.. People can fairly easily exploit what I take to be a possible human, perhaps cultural-specific yet cultural problem, by stoking a sense that words and acts should reflect one another – not cross, reflect upon, question, link, etc. – one another.
I think the idea is that once a person says they are hungry for food, this indicated/reflects a certain sense/feel of a bodily condition. I say X and am X. What if a person said:
am hungry because:
my body is tired? plausible?
am thinking of sound barrier based gallery? hummm..?
am an electric wire?
a coggable wheel?
now say they uttered the above while:
* running.
* cooking.
* dressing up.
* pointing towards the moon.

Perhaps when we attempt to communicate, acts and wording should illustrate and reflect one another? It is, I suppose a certain kind of elements-mutual support. However it distorts how stuffactually is.. (hence am thinking of communication.. an agreeable distortion..)

However, how is it when/if we share – or try to – the more complex rhythm, that of life?

..and then again, if we do the complex – how do we know whether or not a person is a mass murderer that killed a living us president without ever killing anyone..?

non communication and art

Am doing searches for un/no/non-communications – when practices, activities, events or other stuff, does Not communicate, either by intent/nature or failure. eg when i type, i am doing a communicative practice that might fail to mean something, or be misunderstood/construed – however it is a communicative activity. When I go to the toilette, or fix a brew, sleep, look out of the window, etc. – it might Mean something for another person, specially in various communicative contexts, or it might be understood by another in various ways. However, these activities are by intent and their nature, not communicative. They in and of themselves are not an attempt to deliver a message other than whatever another person may read into them. (eg, i may understand you are thirsty when you drink, but i could have also read into this that perhaps you enjoy liquids at 6.37am every day – without misreading or not understanding you, because the reading, the attempt to make your drinking communicate to me, is my own act..)

Now, lets imagine that you drink on stage. That in a sense you share or invite people to share the view of you having a brew. Drinking as a practice then, through the stage/media becomes shareable. Through the processes of letting-others-know i am drinking, there is an assumption that some communication – by intent – takes place. a – else why inform others. b. if am attempting to let-others-know am implying that there is a communicative interest/intent.
However, the shareable mean – eg media – is seen instinctively as a tool rather than a part of a communicative act. This, ofcourse, is an instinctive mistake – eg McLuhan et al – however, if one is interested in UN-intentional, potential constitutive – non-communication processes – perhaps these are the activities/places i should look at?

Searching non-communication brings non-verbal but communicative activities, like tone, gestures, etc..
Maybe am imagining some stuff wrongly here..