Semiotics (signology, sign science) is a science with a history of two thousand years, which only became a world-renowned science in the stream of structuralism in the middle of the 20th century. Intense semiotic interest (research, conferences, publications) began in the 1960s and lasted until the 1990s. Semiotics was a fashionable science during this period. It has been gradually reduced since the 1990s, but its scientific field, interests and methods still exist today - especially in the individual work of some researchers. As a result, his institutional system was not developed. In particular, it has a close connection with philosophy and linguistics, but is used and applied as a method by literary studies, art theory, folklore-ethnography, and many natural sciences (biology, genetics, etc.). Semiotic culture has entered the everyday life of the 20th century man: as he lives among signs, he has to decipher, store, apply more and more signs, and even create signs that can be used on an individual or even social scale. Semiotics is now considered an interdisciplinary field of science that, like mathematics, can be used as a method by both the natural and social sciences.

Rhetoric is the art of persuasion, which along with grammar and logic (or dialectic – see Martianus Capella), is one of the three ancient arts of discourse. Rhetoric aims to study the capacities of writers or speakers needed to inform, persuade, or motivate particular audiences in specific situations. Aristotle defines rhetoric as "the faculty of observing in any given case the available means of persuasion" and since mastery of the art was necessary for victory in a case at law; or for passage of proposals in the assembly; or for fame as a speaker in civic ceremonies; he calls it "a combination of the science of logic and of the ethical branch of politics". Rhetoric typically provides heuristics for understanding, discovering, and developing arguments for particular situations, such as Aristotle's three persuasive audience appeals: logos, pathos, and ethos. The five canons of rhetoric or phases of developing a persuasive speech were first codified in classical Rome: invention, arrangement, style, memory, and delivery.

Language cultivation is the part of applied linguistics which, on the basis of the principles of grammar, seeks to promote the healthy development of language by disseminating linguistic literacy. Its purpose and content are not eternal and unchanging, but a function of time and place; its most timely tasks are always determined by the needs of the given society. (László Grétsy)