as mentioned in my previous post,card rulings sometimes play around with english.just one word of difference in card text can have a totally different meaning.i would like to put up the following example as an illustration,since they are used rampantly:


Effect: Once per turn, you can discard 1 card to special summon 1 level 4 or lower "lightsworn" monster from your graveyard. During each of your end phases, send the top 3 cards of your deck to the graveyard.

See how similar these 2 cards are?but these 2 cards respond differently when faced with the same situation.
Book of moon:
1. Zombie master will not be able to revive the monster after he sends 1 monster to the grave in an attempt to special summon 1 zombie monster.
2. Lumina will be able to revive the monster after she discards 1 card in an attempt to special summon 1 lightsworn monster from grave.

Removed from the field after discarding/sending 1 card/monster:
1. Zombie master will not be able to revive the monster after he sends 1 monster to the grave in an attempt to special summon 1 zombie monster.
2. Lumina will be able to revive the monster after she discards 1 card in an attempt to special summon 1 lightsworn monster from grave.