Screwdrivers are distinguished from each other based on their tip and what type of screw they drive. The two most common screwdriver tips are 1) the slot head screwdriver, and 2) the Phillips-head screwdriver.
Globalization broadly refers to the expansion of global linkages, the organization of social life on a global scale, and the growth of a global consciousness, hence to the consolidation of world society. Such an ecumenical definition captures much of what the term commonly means, but its meaning is disputed.
Noun. 1. linkage-an associative relation. connection, connexion, connectedness-a relation between things or events (as in the case of one causing the other or sharing features with it); there was a connection between eating that pickle and having that nightmare.