A sprig of thyme is about 1 teaspoon. 6 sprigs equal 6 teaspoons. A sprig of rosemary is about 1/2 teaspoon. 8 sprigs equals 4 teaspoon.
Tenure is the act or length of time that something is held or the achieved status of having one's employment position become permanent. 1  An example of tenure is holding a piece of property in your possession only until death as part of a real estate agreement.
To have tenure is an acknowledgement from the host institution of the academic's record of published research, teaching and contribution to the administrative life of their department/institute/college. It is difficult, but not impossible, to fire a tenured academic from their host institution.