The author tries to unravel the dilemma related to the real and etymological understanding of security, its conventional and often polysemantic definition, and its natural and essential definition. In this unraveling, he points to two types of names already distinguished by Plato and Aristotle, namely: conventional and natural. Hence, the semantic analyst and the explanation provided in the following parts of the argument relate to the meaning of: the conventional complex name security, the natural name of this name in Polish and not only in Polish. The conclusion of the argument are the statements indicating, on the one hand, inaccurate and conventional safety terms - most often no threats - and, on the other hand, accurate and natural ones - rather through or through care, control and care. The latter are anchored etymologically and semantically in the archaic name appearing in the Polish language, namely: by security. Also, embedding the meaning of the name security in the Latin securitas (se - everyone; cura - bake) means every kind of protection, supervision and control as well as care. Hence the recommendation for such a natural and accurate definition of the name security, which states that it is a state of affairs whose specificity is care, care and control as well as care. Contrary to this natural definition, conventional safety terms identify this composite name with no threats, although maybe anything, e.g. certainty or reliability, or stability etc.