The term is "contrast" when items are observed or defined by their differences. The word "compare" is used for observed similarities, or more generally for both similarities and differences.
The term for observation or definition by similarities is called comparison.
However, comparison can include appraisal by both similarities and differences, while to compare by differences alone is also called to contrast.
Comparison
Characterizing is merely describing what an object looks like or appears to be, which isn't that hard. Describe its shape, color, if there are any writing or embroidery (stitch work/needlework) on it, its texture (how it feels), how it reacts to environments, etc. If you meant categorizing objects. Characterize (if that is even a word) the object like above and link those characteristics to similar shapes, and you have a category.
data
Cultural exchange
items, objects, ideas,
Brainstorm
outline or contrast
contrast
Compare is a verb (the noun is comparison) Difference is a noun (the verb is differentiate). Compare means to consider one or more objects or ideas and to analyze the similarities and differences. Differentiate means to be able to consider two similar objects (or ideas) and to identify which is which. Contrast means to consider two objects (or concepts) and to identify the differences between them.
A model uses familiar ideas to explain unfamiliar facts observed in nature.
there is no similarities between rausseaunand tagoress philosophy
to examine (two or more objects, ideas, people, etc.) in order to note similarities and differences: to compare two pieces of cloth; to compare the governments of two nations.
Sonic
outline or contrast
Their are fewer sounds to memorize then there were objects and ideas to be represented.
Because lines and curves form objects
Because lines and curves form objects
Two objects, processes or ideas that are manifestation of a particular subject. For instance to examples of a democracy would be: The country called India and the country called The United States of America.