Here are some examples of log home terminology to help you better understand.

Chink. To apply a synthetic or mortar filling around all exterior door and window frames, wall corners, and small
gaps in the exterior wall

Draw Knife. A tool used in the mill to scrape the remaining bark off the log and give it a hand-crafted look

Scribing. Cutting and fitting woodwork to an irregular surface. Often used in handcrafting of logs

Hand-peeled.  The process of removing the bark and outer layer (cambium) of a log. Hand-peeling is usually done using a drawknife, although some companies use machines to achieve a hand-peeled look.
Green Logs. Green logs are logs that are used within weeks and sometimes even days of having been cut.
Purlin. A roof support beam that runs parallel to the ridge beam and the long sides of a home

Wood preservative. Specialized finish formulated to protect wood from the deteriorating effects of wind, rain and sunlight, and attacks by fungus, mold, mildew and insects.