The common names of ${\mathrm{CH}}_3-\mathrm{CH}\left(\mathrm{OH}\right)-{\mathrm{CH}}_2-{\mathrm{CH}}_3$$$  and   ${\mathrm{CH}}_3-\mathrm{CH}\left({\mathrm{CH}}_3\right)-{\mathrm{CH}}_2-\mathrm{OH}$

  are $\_\_\_\_\_\_\_\_$ and $\_\_\_\_\_\_\_\_$ respectively.

Correct IUPAC name of the above compound is 

The IUPAC name of the following compound is:

The structural formula for $2-$ethylprop$-2-$en$-1-$ol is:

The IUPAC name of the above compound is