Blue-ray is refers to blue laser to read the data from high capacity discs which named as bluray ray disk.
Similarly red laser used to read data from DVDs(4.7gb single side n single layer) n CDs.
Any kind of data from pictures(jpeg, png...etc), songs( mp3, flac,mp4 .....etc) movies (mov,dat,Mkv,m2ts...etc) or data(text type) can be written on above media.
Again above discs available in single layer , double layer, double sided to increase the storage capacity.
Coming to 1080(p/i)...its a mode of picture rendering on display unit whether it's interlaced or progressive scan.
As high definition content needs more space to accommodate , here bluray disc comes into picture where it can be stored 51gb or more. At the same time source bluray laser requires to read the data at high speed from the disk.
As our FMs said....please go through below topics on Wikipedia....of any available source...
CD,DVD,BLURAY discs, 1080p, 1080i, high definition picture n sound.......
Thanks.