Graduation is the term used to acknowledge that you have met your degree requirements and you have been approved by Senate to graduate from the program. Convocation refers to the ceremony where the Chancellor confers the degree.
That is the English usage. You need to read the surrounding text to see that is NOT what is being said in the scriptures.
Leviticus 23:2
“Speak to the sons of Israel and say to them, ‘The Lord’s appointed times which you shall proclaim as
holy convocations—My appointed times are these:
Leviticus 23:3
‘For six days work may be done, but on the seventh day there is a sabbath of complete rest, a
holy convocation. You shall not do any work; it is a sabbath to the Lord in all your dwellings.
Leviticus 23:4
‘These are the appointed times of the Lord,
holy convocations which you shall proclaim at the times appointed for them.
Leviticus 23:7
On the first day you shall have a
holy convocation; you shall not do any laborious work.
Leviticus 23:8
But for seven days you shall present an offering by fire to the Lord. On the seventh day is a
holy convocation; you shall not do any laborious work.’”
Leviticus 23:21
On this same day you shall make a proclamation as well; you are to have a
holy convocation. You shall do no laborious work. It is to be a perpetual statute in all your dwelling places throughout your generations.
Leviticus 23:24
“Speak to the sons of Israel, saying, ‘In the seventh month on the first of the month you shall have a rest, a reminder by blowing
of trumpets, a
holy convocation.
Leviticus 23:27
“On exactly the tenth day of this seventh month is the day of atonement; it shall be a
holy convocation for you, and you shall humble your souls and present an offering by fire to the Lord.
Leviticus 23:35
On the first day is a
holy convocation; you shall do no laborious work of any kind.
Leviticus 23:36
For seven days you shall present an offering by fire to the Lord. On the eighth day you shall have a
holy convocation and present an offering by fire to the Lord; it is an assembly. You shall do no laborious work.
Leviticus 23:37
‘These are the appointed times of the Lord which you shall proclaim as
holy convocations, to present offerings by fire to the Lord—burnt offerings and grain offerings, sacrifices and drink offerings,
each day’s matter on its own day—
Numbers 28:18
On the first day
shall be a
holy convocation; you shall do no laborious work.
Numbers 28:25
On the seventh day you shall have a
holy convocation; you shall do no laborious work.
Numbers 28:26
‘Also on the day of the first fruits, when you present a new grain offering to the Lord in your
Feast of Weeks, you shall have a
holy convocation; you shall do no laborious work.
Numbers 29:1
[
Offerings of the Seventh Month ] ‘Now in the seventh month, on the first day of the month, you shall also have a
holy convocation; you shall do no laborious work. It will be to you a day for blowing trumpets.
Numbers 29:7
‘Then on the tenth day of this seventh month you shall have a
holy convocation, and you shall humble yourselves; you shall not do any work.
Numbers 29:12
‘Then on the fifteenth day of the seventh month you shall have a
holy convocation; you shall do no laborious work, and you shall observe a feast to the Lord for seven days.