Question

Identify the part of speech of the underlined wor
We should use eco-friendly things.​

Answer 1

The underlined word is an adjective.

• The underlined word "eco-friendly" denotes the quality of being friendly for the environment. And it denotes the quality for the noun of the sentence ('things').

• And, according to the definition of the adjective,the adjective is a word which describes the noun of a sentence.

• So,the underlined word qualifies all the criteria for being an adjective in the sentence and that's why it's an adjective.

Answer 2

The underlined word 'eco-friendly' is a compound adjective.

Explanation

This question can be answered correctly only if you have thorough knowledge about adverbs and adjectives. Adverbs are words that usually end with '-ly' for example, quietly, beautifully, etc.  

However, there are some adjectives also that end in '-ly', for example, costly, beastly, friendly, lovely, etc.