directly represent the activity that takes place at the represented feature; e.g. a picture of a skier to represent a ski resort or a tent to represent a campground. Conceptual symbols directly represent a concept related to the represented feature; e.g. a dollar sign to represent an ATM, or a Star of David to represent a Jewish synagogue. Conventional symbols (also "associative") do not have any intuitive relationship but are so commonly used that map readers eventually learn to recognize them; e.g. a red line to represent a highway or a cross to represent a hospital. Abstract/geometric symbols (also "adhHoc") are arbitrary shapes chosen by the cartographer to represent a certain feature. Related terms A symbolic action is an action that symbolizes or signals what the actor wants or believes. The action conveys meaning to the viewers. Symbolic action may overlap with symbolic speech, such as the use of flag burning to express hostility or saluting the flag to express patriotism. In response to intense public criticism, businesses, organizations, and governments may take symbolic actions rather than, or in addition to, directly addressing the identified problems. See also Alchemical symbol Astrological symbols Astronomical symbols Emblem Icon (religious) and secular icon List of symbols Logo National symbol National treasure Pictogram Proto-writing Sign Symbolic interactionism Symbolism (arts) Table of mathematical symbols Traffic signs Unicode symbols Universal language References Concepts Notation Semiotics Syntactic entities