Shell Programming and Scripting

1 No one have never become rich by giving.
Anne Dickens
2 No one is worthless in this globe who lightens the weights of other.
Charles_Dickens

rich    poor
have    has
never    ever
Dickens    Frank
worthless    useless
globe    world
weights    burdens 
other    another

1 No one have never become rich by giving.    @    No one has ever become poor by giving.
Anne Dickens    @    Anne Frank
2 No one is worthless in this globe who lightens the weights of other.    @    No one is useless in this world who lightens the burdens of another.
Charles_Dickens    @    Charles_Dickens

awk 'NR==FNR {a[$1]=$2;next} {for ( i in a) gsub(i,a[i])}1' file2 file1 > file3
cat file3

1 No one has ever become poor by giving.
Anne Frank
2 No one is useless in this world who lightens the burdens of another.
Charles_Frank

awk '
NR == FNR       {a[$1] = $2
                 next
                }
                {printf "%s\t@\t", $0
                 L = sub (/\.$/, _)
                 for (i=1; i<=NF; i++) if ($i in a) $i = a[$i]
                 if ($1+0) sub ($1 FS, _)
                 printf "%s%s\n", $0, L?".":""
                }
' file2 file1
1 No one have never become rich by giving.	@	No one has ever become poor by giving.
Anne Dickens	@	Anne Frank
2 No one is worthless in this globe who lightens the weights of other.	@	No one is useless in this world who lightens the burdens of another.
Charles_Dickens	@	Charles_Dickens

if ($1+0) sub ($1 FS, _)

if ($1+0)   sub ($1 FS, _)    #### In if condition it is mentioned $1+0, so by adding 0 to $1's value we are making sure it should take only 
                              #### integer values in first field and then subsitutue this first field value with space to 
                              #### NULL(you could take _ as a variable whose value is NULL). So first we are printing the value of $0 with printf 
                              #### the actual one, then we are editig the line as per OP's requirement so if you see OP doesn't want $1(first field)
                              #### in 2nd part of line where we are printing the exchanged values so this is why it is used here.