Morphology and syntax interact to create new linguistic forms that can express complex and nuanced meanings, convey grammatical information, or perform specific functions. Derivation, inflection, compounding, and word order are the common types of morphological interfaces and interactions. Derivation involves adding affixes to existing words to change their meaning or category, such as adding the suffix '-er' to the verb 'teach' to form the noun 'teacher'. Inflection involves modifying existing words to indicate grammatical features such as number, gender, case, tense, aspect, mood, or person, such as adding the suffix '-s' to the noun 'cat' to indicate plurality. Compounding is the process of combining two or more words to form a new word that has a different meaning or function from its components, such as combining 'black' and 'board' to form the word 'blackboard'. Word order is the process of arranging words in a certain order to convey meaning, grammatical information, or emphasis; for example, changing the word order in the sentence 'She gave him a book' can create different meanings or effects.