① ultimate dictionary authority today - Oxford English Dictionary
② prescriptive method - a record of scholarly opinion regarding how language should be used
③ Johnson's dictionary - Dictionary of the English Language
④ historical method - the use of literary texts to establish context for definitions of words
⑤ Webster's dictionary - American Dictionary of the English Language
⑥ etymology - the history of a word
⑦ lexicography - the science of dictionary making
⑧ language purists - believed that language change was the result of language corruption
⑨ grammarians - scholars who set standards for how language should be used
⑩ descriptive method - a record of the way in which language is actually used
⑪ language fixing - attempts to slow or halt language change
To make it even more easy - look at the attachment below :)
Hope it helps!
