Use italics when first mentioning
After the first use, do not use italics.
Example
The term hypocaust refers to a raised floor structure which allows heated air to circulate beneath the flooring. Hypocausts originated in the…
Use double quotation marks " " when first mentioning
After the first use, do not use quotation marks.
Example
The verb “unfriend” has become popular due to its use on online social networking sites. People unfriend each other when…