So I was studying Chemistry (Hydrogen - Uses, Properties and Preparation) from 2 different textbooks (based on Grade 9 syllabus, I.C.S.E. Board, India) and I found what seems an astounding anomaly to me.
In the two textbooks, the same reaction for liberating Hydrogen gas from a hot concentrated solution of $\ce{NaOH}$ and $\ce{Al}$ is given as follows:-
Textbook 1: $\ce{2Al + 2NaOH + 2H2O -> \underset{\text{Sodium metaaluminate}}{2NaAlO2} + 3H2 ^}$
Textbook 2: $\ce{2Al + 2NaOH + 2H2O -> \underset{\text{Sodium aluminate}}{2NaAlO2} + 3H2 ^}$
If the two reactions are the same, why and how is the name of the same compound ($\ce{NaAlO2}$, Sodium meta aluminate / Sodium aluminate) different? Secondly, what does 'meta' imply in Sodium metaaluminate?