The continuous and progressive aspects (abbreviated CONT and PROG) are grammatical aspects that express incomplete action ("to do") or state ("to be", spirit) in progress at a specific time: they are non-habitual, imperfective aspects. In the grammars of many languages the two terms are used interchangeably. This is the case with English: a construction such as "He is washing" may be described either as present continuous or as present progressive. However, there are certain languages for which two different aspects are distinguished. In Chinese, for example, progressive aspect denotes a current action, as in "he is getting dressed", while continuous aspect denotes a current state, as in "he is wearing fine clothes". As with other grammatical categories, the precise semantics of the aspects vary from language to language, and from grammarian to grammarian. For example, some grammars of Turkish count the -iyor form as a present tense; some as a progressive tense; and some as both a continuous (nonhabitual imperfective) and a progressive (continuous non-stative) aspect.

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