I saw this thread and decided to add some of the details I know. Below are some of the concepts for 7*PM. The romanizations for everything are Yale Cantonese as I find it the easiest to maintain correct pronunciation. Cantonese also stays true to the 7*'s Hong Kong lineage.
IMPORTANT: Do not read too much into the English translations. I wrote them in a manner that would be easiest for me to remember what they are, but they are not fully encompassing of the principle they describe. I truly feel that in order to completely describe the principle you'd need to write pages of text!
十二柔手 - Sahp Yih Yàuh Sáu - 12 Soft Principles
1 - 見剛而囘手 - Gin Gōng Yìh Wúi Sáu - Yield the right of way to the hard
2 - 入手而偷手 - Yahp Sáu Yìh Tàu Sáu - Steal the beat from the advancing opponent
3 - 截手而滾手 - Jiht Sáu Yìh Kwàn Sáu - Intercept and empty
4 - 滾手而漏手 - Kwàn Sáu Yìh Lahu Sáu - Slipping around and through the defenses
5 - 直統而抅手 - Jihk Tóng Yìh Àu Sáu - Attach the hook to straight attacks
6 - 採手而入手 - Choí Sáu Yìh Yahp Sáu - Advance immediately after contact
7 - 摟手而進手 - Láu Sáu Yìh Jeun Sáu - Attack while simultaneously dragging
8 - 磕手而入手 - Hahp Sáu Yìh Yahp Sáu - Pressing to the outside and advance
9 - 撲手而入手 - Pok Sáu Yìh Yahp Sáu - Pressing downward and advance
10 - 挑手而入手 - Tìu Sáu Yìh Yahp Sáu - Lifting and advance
11 - 開手而叠手 - Hoì Sáu Yìh Dihp Sáu - Stacking the arms
12 - 粘手而破手 - Jìm Sáu Yìh Po Sáu - Stick to and break the attack (Chin Na)
八剛手 - Baat Gōng Sáu - 8 Hard Principles
1 - 太山壓頂 - Taai Sāan Ngaat Déng - Falling Attacks
2 - 迎面直統 - Yìhng Mihn Jihk Túng - Straight Attacks
3 - 順步雙掌 - Seuhn Bouh Sēung Jéung - Double Palms & Body Move in Sync
4 - 疊肘硬供 - Dihp Jáu Ngaahng Gūng - Elbow Attacks
5 - 貼門靠壁 - Tip Mùhn Kaau Bīk - Stick & Lean Attacks
6 - 硬崩伏低 - Ngaahng Bāng Fuhk Dāi - Illusive Attacks
7 - 左右雙運 - Jó Yauh Sēung Wahn - Circular Attacks
8 - 摔捋兩分 - Sēui Tyut Léuhng Fān - Separation Attacks
31 Keywords (LKW)
1 - 抅 - Àu
2 - 摟 - Láu
3 - 採 - Chói
4 - 掛 - Gwa
5 - 刁 - Dìu
6 - 崩 - Bàng
7 - 粘 - Jìm
8 - 黏 - Nìhm
9 - 貼 - Tip
10 - 靠 - Kaau
11 - 閃 - Sím
12 - 騰挪 - Tèngh Nòh
13 - 挫 - Cho
14 - 統 - Tóng
15 - 挑 - Tìu
16 - 封 - Fùng
17 - 補 - Bóu
18 - 圈 - Hyùn
19 - 勢劈 - Sai Pek
20 - 纏 - Chìhn
21 - 偷 - Tàu
22 - 漏 - Lahu
23 - 翻 - Fàan
24 - 頂 - Díng
25 - 榜 - Bóng
26 - 碎 - Seui
27 - 捋 - Tyut
28 - 提 - Tàih
29 - 彈 - Tàahn
30 - 脱 - Tò
31 - 楸 - Chàu
Perhaps I'll come back later to add more and also toss on the English translations to the 31 keywords.