The first word we will be going over is nowhere, which can be used both as an adverb and as a noun. Nowhere refers to something or someone as not being in any place. For example: I have nowhere to sit!

Usually slow is used as an adjective and slowly is used as an adverb, but slow can also be used as an adverb. (Note: Slowly is never used as an adjective.)

Formal Characteristics of Adverbs

(In this case, we know slowly is an adverb because it describes how he walked. However, very is also an adverb, and it modifies or describes how slowly he walked.)

Slow can be used as an adjective and as an adverb. In the first example, slow is an adverb and in the second one, it is an adjective. Correct: The traffic is moving slow. Slowly is only an adverb.

COINCIDENTALLY (adverb) definition and synonyms | Macmillan Dictionary.

adjective, sour·er, sour·est. producing the one of the four basic taste sensations that is not bitter, salt, or sweet. characteristic of something fermented: a sour smell.

Adjective The milk had turned sour. He made a sour face. Verb Her disposition has soured in recent years. Jealousy has soured their relationship.

As detailed above, ‘sour’ can be a noun, a verb or an adjective. Verb usage: Too much lemon juice will sour the recipe. Verb usage: We broke up after our relationship soured.

adjective. pleasing, agreeable, or enjoyable; giving pleasure: pleasant news.

In a pleasant manner; so as to achieve a pleasant result. (obsolete) Ludicrously.

adjective, poor·er, poor·est. having little or no money, goods, or other means of support: a poor family living on welfare. Law. characterized by or showing poverty. deficient or lacking in something specified: a region poor in mineral deposits.

Nice is an adjective meaning ‘pleasant’, ‘enjoyable’ or ‘satisfactory’: …

Pleasantness, especially of behaviour or personality; agreeableness.