Question

Keynote address  the main speech or lecture given at a large meeting, conference, or seminar, etc. / Mr. Thompson will be delivering the keynote address at this year's conference. / John made some very interesting points in his keynote address.

Accepted Answer

Noun + Noun

Collocation	Keynote address
Type	Noun + Noun
Examples	the main speech or lecture given at a large meeting, conference, or seminar, etc. / Mr. Thompson will be delivering the keynote address at this year's conference. / John made some very interesting points in his keynote address.

Keynote Address Noun Main Speech Lecture Large Meeting