Block and chain, because word suggests, a series made of blocks! So we know what are these blocks. Blocks are a kind of database! People who develop computers know databases well! And for people who do not know, if we say in simple language, then this database is named Collection https://damienxzce84062.smblogsites.com/30567612/what-is-blockсhain-technology-and-how-does-it-work