direct 指为某人指方向，但自己不一定亲自引路，也可表示指导一群人的事或活动。
conduct 正式用词，指引导某人去某处，强调亲自带领；也强调监督管理一群有共同目的或目标的人。
guide 普通用词，可与conduct换用，指引导者与被引导者双方彼此合作，共同努力的关系。
lead 指走在前面给某人引路或带路人共同去达到某一目标。用于抽象意义时，指在某项活动或运动中起主导和组织作用。
pilot 从原义“为飞机、轮船导航”借喻为指亲自带领某人去某处。
参考例句
1. He will guide you to the top of the mountain. 他将带领你们登上山顶。
2. And what does her guide dog think? 那她的导盲犬是怎么认为的？
3. Reason is the guide and light of life. 理智是人生的向导和生命的光辉。
英英解释
n.
1. someone employed to conduct others
2. someone who shows the way by leading or advising
3. something that offers basic information or instruction
4. a model or standard for making comparisons
5. someone who can find paths through unexplored territory v.
1. direct the course; determine the direction of travelling
2. take somebody somewhere
3. be a guiding force, as with directions or advice
4. use as a guide
5. guide or pass over something
