Question

distinguish between inflectional suffix and a derivational suffix with examples

Answer 1

inflectional (grammatical) (e.g. –ed, -ly, -‘s, -s, -er, -ed, -es, -est, -ing : if it is used to turn a verb into e.g. present participle: example: break -->breaking, eat-->eating)
--> derivational (lexical): words formed by the attachment of lexical affixes are derived from other words, and derivational affixes are those affixes which help in this derivation (e.g. dis-, re-, in-, be-, en-, -ly, -ance, -able, -ize, -ish, -like, -ment, -ing : if it is used to turn the verb into a noun: example: build --> a building, two buildings, nourish-->nourishing)