| essential singularity | kesingularan esensial | Tiada | kesingularan penting | Matematik |
| essential singular point | titik singular esensial | Tiada | titik singular penting | Matematik |
| essential mineral | mineral utama | Tiada | mineral utama | Geologi |
| essential equivalence | kesetaraan esensial | kesetaraan penting | kesetaraan penting | Sains Politik |
| essential infrastructure | prasarana penting/infrastruktur penting | infrastruktur/ prasarana penting | infrastruktur/ prasarana penting | Sains Politik |
| essential equivalance | kesetaraan esensial | kesetaraan inti | kesetaraan inti | Sains Politik |
| essential chemical element | unsur kimia esensial | unsur kimia perlu | unsur kimia perlu | Pertanian |
| essential hypotony | hipotoni esensial | hipotoni esensial | hipotoni esensial | Perubatan |
| essential blepharospasm | blefarospasme esensial | blefarospasme esensial | blefarospasme esensial | Perubatan |
| essential iris atrophy | atrofi iris esensial | atrofi iris esensial | atrofi iris esensial | Perubatan |