You use each other when you are saying that each member of a group does something to the others or has a particular connection with the others. We looked at each other in silence Both sides are willing to make allowances for each other's political sensitivities Uncle Paul and I hardly know each other
(used of count nouns) every one considered individually; "each person is mortal"; "each party is welcome"
emphasis If you refer to each one of the members of a group, you are emphasizing that something applies to every one of them. He picked up forty of these publications and read each one of them
If you refer to each thing or each person in a group, you are referring to every member of the group and considering them as individuals. Each book is beautifully illustrated Each year, hundreds of animals are killed in this way Blend in the eggs, one at a time, beating well after each one. Each is also a pronoun. two bedrooms, each with three beds She began to consult doctors, and each had a different diagnosis. Each is also an emphasizing pronoun. We each have different needs and interests. Each is also an adverb. The children were given one each, handed to them or placed on their plates They were selling tickets at six pounds each. Each is also a quantifier. He handed each of them a page of photos Each of these exercises takes one or two minutes to do The machines, each of which is perhaps five feet in diameter, are not the largest devices in the room
It is used either with or without a following noun; as, each of you or each one of you
The word each is singular When it is the subject of the sentence or precedes the subject, the verb and any nouns or pronouns referring to the subject should also be singular
bar in a Segmented Bar Chart represents one item or topic from the survey The total length of each bar represents 100 percent of all responses to that survey item
qualifying a singular noun, indicating all examples of the thing so named seen as individual or separate items; compare every
to or from every one of two or more (considered individually); "they received $10 each