believe和think都有认为的意思,但二者用法有什么区别吗?

believe
vt.,vi.①有坚定的宗教信仰
vt.,vi.②相信；信任
[例句] to believe sb.信任某人
vt.,vi.③认为；想
[例句] I believe it to have been a mistake.
我认为那是个误会.
[词组] believe in
vt.,vi.①信仰；信任
[例句] to believe in God 信仰上帝
vt.,vi.②相信
[例句] to believe in telling the truth 相信说的是真话
vt.,vi.③认为（某事物）有价值
[例句] to believe in homeopathy 认为顺势疗法有
think
vt.,vi.thought,thinking①想；思考；思考
[例句] Have you thought about what job you are going to
do?你考虑过准备做什么工作了吗?
vt.,vi.②以为；觉得；认为；相信
[例句] What do you think of my singing?
你觉得我的歌唱得怎么样?
vt.,vi.③想出；忆及
[例句] I can't think of his name at the moment.
我一时想不起他的名字.
vt.,vi.④料想；想到
[例句] We didn't think we'd be this late.
我们没有想到会这样晚.
vt.,vi.⑤to think aloud 自言自语
vt.,vi.⑥think twice 再三考虑,三思
n.想；思考；思考
[例句] have a think 想一想
[词组] think of
n.①考虑；思考
[例句] We are thinking of going to France.
我们考虑到法国去.（= think about）
n.②not think much of 看轻
n.③think better of sb.对某人印象好；看重某人
n.④think better of sth.改变…念头；打消主意
n.⑤think highly of 看重；器重
[例句] think well of 重视
[例句] think little of 看轻；看不起
[例句] think poorly of 不放在眼里；轻视
n.⑥think nothing of 轻视；认为无所谓；认为没什么了不起
[词组] think out
n.想出；想通；想透；仔细考虑（亦作：think over
两者比较一下.