1. important =crucial （extremely important），significant（amount or effect large enough to be important）
2.common=universal， ubiquitous（if something is ubiquitous， it seems to be everywhere）
3.abundant=ample（enough and usually extra）， plentiful（enough for people”s needs and wants）
4.stick=adhere， cling（hold on something tightly）
5.neglect=ignore。（difference： neglect means someone has not paid enough attention to something; ignore means no attention。）
6.near=adjacent（twothings next to each other）， adjoin（the same as adjacent）
7.pursue=woo（man woos woman， old-fashioned）， seek（if you seek sth， you try to obtain it. FORMAL）
8.accurate=precise（precise is exact and accurate in all details）， exact（correct in every detail）
9.vague=obscure（unknown or known by only a few people）
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10.top=peak， summit
11.competitor=rival， opponent（especially in sports and politics）
12.blame=condemn（if you condemn something， you say it is very bad and unacceptable）
13.opinion=perspective， standpoint（means looking at an event or situation in a particular way）
14.fame=prestige（describe those who are admired）， reputation
15.build=erect（you can erect something as buildings， FORMAL）， establish
16.insult=humiliate（do something or say something which makes people feel ashamed or stupid）
17.complain=grumble （complain something in a bad-tempered way）
18.primary=radical （very important and great in degree）， fundamental
