Since I don't know the specific 'goblin is very strong' light novel, generally in light novels, a strong goblin might have enhanced physical abilities like great strength, speed, and agility. Maybe it has some special powers or magic that sets it apart from ordinary goblins.
Typically, goblin - related elements in such novels might include the physical appearance of goblins which could be small, wiry, and perhaps with sharp features. Their behavior might be mischievous or even somewhat devious in the context of the erotic story.
Since I haven't read the 'from goblin to goblin god novel', I can only guess. There could be the goblin itself, of course, which is the central character on its journey to godhood. There may be other goblins too, some of whom might be jealous of the protagonist's growth and try to stop it. And perhaps there are some human or elf characters who are initially dismissive of the goblin but later come to respect it as it gains power.
A common theme is the clash of cultures. Goblins often have their own unique society and values, which are different from humans. So, stories explore how characters deal with this cultural gap.
Goblin fiction refers to a genre of fictional works that center around goblins. These can include stories in books, short tales, or even in some forms of digital media. Goblins in such fiction are often depicted as small, mischievous, and sometimes malevolent creatures with their own unique cultures and behaviors.