The dictionary includes some unapproved words that can be technical names if you can put them in the applicable technical name category.

Examples:

“Base” is an unapproved word in the dictionary. But you can use this word as a technical name.

STE: The base of the triangle is 5 cm.

(“Base” is a technical name, category 7, mathematical, scientific, and engineering terms.)

Non-STE: Make sure that the two spigots at the base of the unit engage.

(“Base” is an unapproved word that is related to a surface.)

STE: Make sure that the two spigots at the bottom of the unit engage.

The same word “base” can go into different technical name categories when it is used with different meanings in different contexts.

Example:

STE: Access to the base is permitted between 9 a.m. and 6 p.m.

(“Base” is a technical name, category 5, names of facilities, infrastructure, their parts, and locations.)

“Backup” is an unapproved word in the dictionary. But you can use this word as a technical name.

Example:

STE: Do the backup of the computer at regular intervals.

(“Backup” is a technical name, category 19, information technology and telephony terms.)

“Backup” is one-word technical name. But you can also write “backup file”, a two-word technical name which contains the unapproved word “backup”.

Examples:

STE: Keep the backup file in a safe area.

(“Backup file” is a technical name, category 19, information technology and telephony terms.)

Non-STE: For this procedure, make sure that one person is available as backup.

(“Backup” is unapproved here and you cannot use it.)

STE: Two persons are necessary to do this procedure.

“Main” is an unapproved word and its approved alternative is “primary”. But you can use this word as part of a technical name.

Examples:

(“Main part” is not a technical name, and it is correct to replace “main” with “primary”.)

STE: Retract the main landing gear.
(“Main landing gear” is a technical name. Do not replace “main” with “primary” here, because “primary landing gear” is not the official name given, for example, in company nomenclature.)