joiner:
(plural: ‘joiners‘)

an expert joiner at work
a carpenter of a special skill (‘joiner’, in this context, is also used to refer to a carpenter’s tool, also called a ‘jointer’, which is used in joining planks/pieces of wood together);
a person who is very interested in joining in several clubs, organisations, causes, etc., like some of us who join or subscribe to every social network or communities on the Net,

(representation of a joiner of a club)
Matthew is a skilled joiner who does all sorts of fine carpentry jobs and charges his customers very reasonably.
The new furniture making factory in our town employees the best carpenters and joiners who can work in not only the traditional ways but also the contemporary ways using modern tools and devices.
Clara is such an enthusiastic joiner that she joins any club or organisation that happens to approach her, and number has grown so large that she doesn’t find enough time to participate in any one of the club’s activities!
In order to boost the number of joiners, clubs that once enjoyed exclusive and high premium membership are offering membership without fee and ID check, which some old members fear might bring the clubs’ reputation to the lowest level.
