Hello,
The first picture is most likely Seriatopora caliendrum (See Veron's COW Vol #2 pg.55 plate #3).
The second coral is possibly Acropora granulosa which is common and found over a wide range or the less common and smaller ranging Acropora lokani. They look almost identical when small but A. granulosa tends to become plate-like as it matures while A. lokani grows more upright.
Regards,
Kevin