Criticism
Criticism is when a member says something about another member's bot in the latter's showcase. Criticism is a virtually unavoidable aspect of having a showcase and if you ask for no criticism, you are likely to get even more. Note that criticism doesn't necessarily carry conflict : criticism can be simple advice or caustic attacking. Criticism can be classified into numerous subsections, but for now we'll keep it simple.
High-quality advice: This is the gold standard, the highly sought after, the stuff that truly helps a newbie become a better builder. This is most often a deep analysis of the bot, it's strengths, it's weaknesses and how can it be made better.
Standard advice: This is the advice you get most often. It tends to be given by OK builders, or by builders who don't want to spend much time helping the newbie.
It is by name correct, but it is quite generic and certainly could be better.
Bad advice: May be just total nonsense, or standard advice given in the wrong conditions or context (OH HAI THAR GAUCHE SUEDE), or someone who doesn't know enough his RA2. Bad advice comes often from unexperienced members. However, the most competent in advice tend to quickly locate bad advice and blame the responsible, most especially Naryar.
Trolling: Which is not actually advice, but just a way to annoy the forum poster. A lesser, milder form is known and tolerated as "trash talk". However, any serious attacks or insults in showcases are a grave misbehavior and will find an angry Naryar waiting.
Note that a post can be insulting yet contain precious advice, generally due to the advice-giver being pissed at the newbie's lack of quick learning or just being annoyed for whatever reason. This is generally frowned upon.