In compound words, which consist of several distinct word roots, each word retains its own stress pattern, potentially breaking from the normal trochaic pattern. If the first element of a compound has an odd number of syllables, then there will be a sequence of two unstressed syllables followed by a stressed one, which does not occur in non-compound words. In some cases, the first element of a compound has only one syllable, resulting in two adjacent stressed syllables. Hence, stress is lexically significant in that it can distinguish compounds from non-compounds.