Semiotics
Singnifier denotation - marks on a paper sound in the air an object - areal physical entity
Signified connotation - the mental concept in my mind when hear the sound look at the object - A cultural experience
Indexical sign - example a picture of a footprint a particular foot has stood in this spot
Indexical signs claim a casual relationship between signifier and signified
Iconic sign - a photograph looks like or resembles a person
symbolic Sign - the word C.A.T the letter do not look like a cat the word is not the sound of a cat the relationship to the creature is established through convention
The more iconic the sign the more constrained it is Highly constrained (realistic)
Even the most constrained signifier are still arbitrary elements
Visual images can be put together to establish conventions some realistic others less so requiring repeated attempts to make them seem conventional
My thoughts
Although divulging into the world of semiotics can seem daunting breaking the key elements down can help to understand. a signifier can be a word that is associated with an object. to highlight an example of this a signifier railway crossing sign can be signified by a real picture of a rail way crossing. its a very interesting idea how as a games designer u can incorporate semiotics into developing and iterating games