Kisses only. Many of these books are quite simply “sweet.”
No explicit sensuality. Kissing and touching, but physical romance is described in general terms or implied. The emphasis is on how lovemaking made the characters feel emotionally, and not on graphic description.
Moderately explicit sensuality. Physical details are described, but are not graphically depicted. Much is left to the reader’s imagination.
More explicit sensuality. Sex is described in more graphic terms. Hot books typically have more sex scenes and are more likely to depict acts beyond intercourse.
Extremely explicit sensuality – these books are often erotic romances or flatout erotica.