A front vowel is a vowel that is articulated with the front part of the tongue.

He is leaning forward to work on the new project.

Preparedness for the exam is important.

His live performance was truly moving.

He prefaced a little before he started talking.

He made a long preface before starting his talk.

Please submit this report in advance.

This kanji has the 'kuni-gamae' radical.

Is it possible to get an advance on my salary?

He took an advance on his salary.