Are both open and closed syllables in monosyllabic words? In other words, are there open or closed syllables in polysyllabic words?

Are both open and closed syllables in monosyllabic words? In other words, are there open or closed syllables in polysyllabic words?


Of course, polysyllabic is composed of multiple open syllables and closed syllables. For example, baidu is composed of two open syllables: Bai and Du



Are open and closed syllables right for monosyllables?
Are the concepts of open syllable and closed syllable only for monosyllabic words, or are they also applicable to polysyllabic words? In other words, can we talk about which syllable is open or closed in polysyllabic words?
Note that it is not a distinction between open and closed syllables~


Open syllable 1) a monosyllabic syllable ending with a pronounced vowel. E.g.: be, he. 2) a syllable ending with a consonant (except R) + a silent E. e.g.: make, like



Words with open and closed syllables of e


me,she,these
pen,well,desk