author与writer这两个名词均有“作者、作家”之意。
author ：泛指用自己名字或笔名发表过作品的人，不强调是否以写作为主职业。
- Who is your favourite author?
你最喜欢哪位作家？ - He is the author of three books on art.
他写了三本艺术专著。 - As the author of the proposal I cannot agree with you.
我作为提案的发起人不能同意你的意见。
writer ：含义广泛，一般指以写作为职业的人。
- writers of poetry
诗人 - a travel/cookery, etc. writer
游记作家、写菜谱的人等 - Turner is a writer and critic.
特纳是作家兼批评家。
