Duplicate Keywords - List #43 (Proposals for Permanent Merger and Auto-Conversion) ("-relationship" keywords)

Here is the next installment of my lists of proposed keywords for permanent merger and auto-conversion.

I am posting this for fellow contributors to review first and raise any objections or questions. I will wait at least 14 days before changing this post to a "problem" post and asking IMDb staff to make the proposed changes.

The mergers and auto-conversions should be made in the direction of the arrows.

Duplicate Keywords Proposed for Permanent Merging and Auto-Conversion

boys-and-girls (201 titles)  -->  boy-and-girl (11 titles)  -->  boy-girl (18 titles)  -->  boy-and-a-girl (1 title)  -->   boy-girl-relationship (241 titles)

estranged-husband-estranged-wife-relationship (50 titles)  -->   husband-wife-estrangement (273 titles)

friend-friend-relationship (44 titles) -->  friendships (19 titles)  -->  friendship (16507 titles)

mother-and-child (33 titles)  -->   mother-child (8 titles)  -->  mother-child-relationship (189 titles)

older-man-girl-relationship (3 titles) -->  older-man-young-girl-relationship (152 titles)  -->  older-man-younger-girl-relationship (18 titles)  -->  girl-man-relationship (56 titles)  -->  man-girl-relationship (93 titles)

older-man-teenage-girl-relationship (88 titles) -->   man-teenage-girl-relationship (42 titles)

older-man-younger-woman (187 titles) -->  younger-woman-older-man (14 titles) -->  younger-woman-older-man-relationship (41 titles) -->  older-man-younger-woman-relationship (1604 titles)

older-woman-younger-girl (22 titles)  -->  woman-girl-relationship (12 titles)

older-woman-younger-man (137 titles) -->   younger-man-older-woman (25 titles) -->   older-woman-younger-man-relationship (1218 titles)

parent-child (22 titles)  -->  parents-and-child (7 titles)  -->  parents-child-relationship (2 titles)  -->  parent-child-relationship (670 titles)

sexual-relationships (51 titles)  -->  sexual-relationship (41 titles) 

siblings (429 titles)  -->  sibling (475 titles)  -->  sibling-relationships (27 titles)  -->   sibling-relationship (147 titles)