A convocation is a group of people formally assembled for a specific purpose, typically ecclesiastical or academic.
Degree being awarded at a University of Toronto convocation
A cadet of the Royal Military College of Canada plays bagpipes in Currie Hall during the college's fall Convocation.
A college convocation banner in India
Interior of Convocation House, Oxford, the meeting place of the university's convocation
Matriculation is the formal process of entering a university, or of becoming eligible to enter by fulfilling certain academic requirements such as a matriculation examination.
Convocation
…of the university (similar to congregation in some British universities). At Harvard University and Columbia University it is the name used for the matriculation ceremony that formally welcomes new students at the start of the academic year. At some universities in the UK and other countries, convocation refers…
Students arriving for a matriculation ceremony at the Sheldonian Theatre, Oxford, UK