There are many varieties of criticism. This article describes common types that occur regularly in everyday life. For other criteria that classify criticisms, see this page. For more subject-specific information, see the pages on topics such as art, film, literature, theatre, or architecture.
Aesthetic criticism is a part of aesthetics concerned with critically judging beauty and ugliness, tastefulness and tastelessness, style and fashion, meaning and quality of design—and issues of human sentiment and affect (the evoking of pleasure and pain, likes and dislikes). Most parts of human life have an aesthetic dimension, which means there is plenty potential for criticism. Often architecture criticism is considered the highest form of aesthetic criticism, because architecture combines art, science and technology to build a pleasing home environment, a "living space" that people must inhabit everyday, more or less permanently.
An aesthetic critic however does not simply say "it's beautiful" or "it's ugly." Instead, the aim is to explain the meaning of a work of art, why something is beautiful or ugly, or how the meaning of a design should be interpreted, the stronger and weaker sides of a cultural object, etc. For this purpose, aesthetic critics have a toolkit of criteria they can use in their commentary. These criteria include such things as:
Using these kinds of criteria, which usually assume extensive relevant knowledge, aesthetic critics can inform their audience about the achievements and limitations of the object of aesthetic criticism. In this way, they can draw attention to aesthetic issues most people might have overlooked, educate people in their aesthetic appreciation, and stimulate debate about what kinds of aesthetic expressions are preferable.
In part, aesthetic criticism can genuinely prove aesthetic propositions;– if they concern matters of factual or logical evidence. For example, either an artist had a certain motivation, or s/he did not. But insofar as "beauty is in the eye of the beholder", there is always also a subjective element in aesthetic criticism, which is not provable, but expresses a preference, a personal taste. It may be possible to explain that preference, but it may not be possible to compare it meaningfully with other preferences.