人潮 

Pinyin: rén cháo 
Meaning：Streams of people; crowds  
Sentence：人潮从火车站涌出。Streams of people were coming out of the railway station.

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人： 

Pinyin: rén
Meaning: Fellow; human; human being; individual; man; person; soul
Radical: 人
Stokes: 2
Traditional: 人
Common words/Phrase:
工人 [gōng rén] 【worker】 
人员 [rén yuán] 【personnel; staff; crew】
人体 [rén tǐ] 【human body】
人民 [rén mín] 【people】
人民币 [rén mín bì] 【Renminbi (RMB); Chinese unit of currency】

潮： 

Pinyin: cháo
Meaning: Tide
Radical: 氵
Stokes: 15
Traditional: 潮
Common words/Phrase:
潮流 [cháo liú] 【tide】
潮湿 [cháo shī] 【moist】
潮水 [cháo shuǐ] 【tidewater】
潮汐 [cháo xī] 【tide】
潮红 [cháo hóng] 【flush】