NA

There are about 18 standard Chinese characters that are spoken 'na'. While there is no predominant sound-determining element, several of the characters spoken 'na' incorporate the character 内 = nei(4) = inside.

na(1)

na(2)

拿 = take, bring, hold

请拿我的毛巾来! = Qing(3) na(2) wo(3)de(-) mao(2)jin(1) lai(2)! = Please bring me my towel!

请拿垃圾下去! = Qing(3) na(2) la(1)ji(1) xia(4) qu(4)! = Please take the garbage downstairs.

请帮我拿一下包! = Qing(3) bang(1) wo(3) na(2) yi(1) xia(4) bao(1)! = Please help me hold one moment the bag!

na(3)

哪 = where?

The two-character form is almost always used:

哪里 = na(3)li(-) = where?

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na(4)

那 = that / demonstrative pronoun for things further away:  when not followed by a noun, the two-character form is preferred:

那个 = na(4)ge(-) = that

那里 = na(4)li(-) = there

The same meaning, but with clearer sound  (recommended for non-native speakers):

那边 = na(4)bian(1) = there, lit. 'on that side' / used especially when accompanied by a pointing gesture

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呐 = (this character is never used alone)

呐喊 = na(4)han(3) = to shout (to call with a load voice, not because of anger)