The term 'SHARE IN' can be expressed in a variety of ways, including 'INTEREST' (8 letters), 'ENTER' (5 letters), 'PARTAKE' (7 letters), 'takepart' (8 letters), 'partakeof' (9 letters), and 'playapart' (9 letters). Each of these terms implies the idea of participating in something with others, whether it is an activity, a project, or a business venture. By sharing in something, one is taking part in it and contributing to its success.