Given two examples each for position and functional isomerism.

Explanation

Position isomerism is due to difference in the position of a substituent or multiple bond or functional group
`underset("1-propanol")(CH_(3)CH_(2) CH_(2)OJ) underset("2-propanol")(CH_(3)overset(OH)overset(|)(CH)CH_(2))`
`underset("1-butene")(CH_(3) CH(2)CH=CH_(2))` `underset("2-butene")(CH_(3)CH=CH CH_(2))`
Functional isomerism is due to difference in the functional group in the molecules.
eg: 1. `underset("Ethyl alcohol")(CH_(3)CH_(2)OH) underset("Dimethyl ether")(CH_(3) OCH_(3))`
2. `underset("Propanol")(CH_(3)CH_(2)CHO) underset("Propanone")(CH_(3)COCH_(3))`