A string stores text, while a char stores one character.

Strings and Chars

StringsChars.cs
using System;

class Program
{
    static void Main()
    {
        string word = ;
        char first = word[0];
        int length = word.Length;

        Console.WriteLine($"word={word}");
        Console.WriteLine($"first={first}");
        Console.WriteLine($"length={length}");
    }
}
using System;

class Program
{
    static void Main()
    {
        string word = ;
        char first = word[0];
        int length = word.Length;

        Console.WriteLine($"word={word}");
        Console.WriteLine($"first={first}");
        Console.WriteLine($"length={length}");
    }
}
using System;

class Program
{
    static void Main()
    {
        string word = ;
        char first = word[0];
        int length = word.Length;

        Console.WriteLine($"word={word}");
        Console.WriteLine($"first={first}");
        Console.WriteLine($"length={length}");
    }
}
string A string is a sequence of characters.