Cohesion, along with adhesion (attraction between unlike molecules), helps explain phenomena such as meniscus, surface tension and capillary action. Mercury in a glass flask is a good example of the effects of the ratio between cohesive and adhesive forces.
Definition of aspire for English Language Learners : to want to have or achieve something (such as a particular career or level of success) ASPIRE Defined for Kids
Aspiration is a generic term refering to the action of material penetrating the larynx and entering the airway below the true vocal folds. Purpose of swallowing evaluation is to define the reason for the presence of aspiration.