 Let's analyze the word destructions. At first sight we are tempted to assume that destruct is the base form. But a quick look at corpora such as the British National Corpus, or Quality Assured Dictionary such as Longman's Dictionary of Contemporary English, reveals that destruct, if at all, is a highly specialized military term as in auto-destruct. So the base form must be destroy, which is of course a verb. Now the nominal affix ION is attached, and this turns the verb into a noun. Well, and if we attach the plural suffix, we still have a noun. The definition of the morphological processes is simple. Destroy is the base, the attachment of ION and derivational process, and the plural S is a case of inflection. And the morphological operations? Well, both ION and S are cases of affixation. But if we incorporate the phonological code, we can also observe a base change, where the base destroy changes to destruct. That is, we have a vocaliate change plus the addition of a consonant, similar to cases such as construe construction.