Esters are named as follow,
First the group which has replaced the Hydrogen atom of hydroxyl group of carboxylic acid is named. Like in In Phenyl propionate, Phenyl is written first as it is substituting -H of Propionic acid. Secondly the name of carboxylic acid is written with replacing the end -ic acid with -ate. Like -ic acid in propionic acid is replace by -ate i.e propionate.
Second example is also named according to above mentioned rules.
First the group which has replaced the Hydrogen atom of hydroxyl group of carboxylic acid is named. Like in In Phenyl propionate, Phenyl is written first as it is substituting -H of Propionic acid. Secondly the name of carboxylic acid is written with replacing the end -ic acid with -ate. Like -ic acid in propionic acid is replace by -ate i.e propionate.
Second example is also named according to above mentioned rules.