Hua means 'fruit' and this is also the meaning of the hua glyph type. If the 'fruit' is hanging at the opposite side (at left) the meaning will be reversed. The opposite of 'fruit', i.e. the new generation in form of for instance a son, is the old generation - the 'father':

Gb4-30	Ca7-14
new generation	old generation

These two examples are each drawn with two 'units' (in contrast to what we can see in Ha1-30 and Gb3-23). It means the two 'generations' are 'different individuals' (which we in our own culture take for granted). But in Polynesia the old generations still live on in the members of the current generation.

When - as in Ca7-14 and Gb4-30 - there are two 'units', it must therefore mean that the 'son' is of another sex. In other words, the moon shapes in these two glyphs depict females.