How to highlight model or category names in scientific text (if they are ordinary words)?

For example, there are two sentences

1. The government is considering that the crisis will follow a soft scenario …
2. Dr. Jones has calculated soft and hard crisis scenarios. The input data was …

In the first case, soft is just an adjective (not about a chair, but still one of the usual meanings).

In the second, soft and hard are, of course, also real features. But in addition they are the names of the models and they are used in this way in the following text. I have a suspicion that they should be set off. Italic (like terms or emphases)? quotation marks (as non-standard(?) sense)? capital initial (as for proper names)? Something else or nothing?