When to use "easier" and "easily"?
I am wondering about usage of "easier" and "easily". In my opinion, both of the following sentences are corrected.

1. This product helps you clean your shirts easier. - This means "this product" helps you clean your shirts easier than before.
2. This product helps you clean your shirts easily. - This means "this product" helps you clean your shirts easily, very easy.

I would like to know the differences between them. Which one sounds more common for you? What do you usually say in you country?

Question

When to use "easier" and "easily"?
I am wondering about usage of "easier" and "easily". In my opinion, both of the following sentences are corrected.

1. This product helps you clean your shirts easier. - This means "this product" helps you clean your shirts easier than before.
2. This product helps you clean your shirts easily. - This means "this product" helps you clean your shirts easily, very easy.

I would like to know the differences between them. Which one sounds more common for you? What do you usually say in you country?

Answer

"easier" is the comparative form of the adjective "easy"; it only qualifies nouns or other adjectives.
"easily" is an adverb; it's the adverbial correspondent of the adjective "easy"; it only qualifies verbs.
so: "easy" (adjective) and "easily" (adverb); "easier" (comparative of "easy") and "more easily" (comparative of "easily")
examples:
this is an easy answer.
this is an easier answer than the other one.
you answered it quite easily.
you answered it more easily than I could have done it.

hope this helped

Answer

Usually I use the second one, easily - an adverb, meaning that with this product I have no difficulties washing my clothes. For the first one, easier - it's a comparative degree of an adjective easy, so you use it to compare several products. For example, you can say Yesterday I bought a new product for my washing machine and now it will be easier then before to clean my t-shirts.

Answer

Strictly speaking grammarwise, sentence one is not correct. The correct term is "more easily" in sentence two to realize the same meaning.