lally column vs support column

lally column and support column both are nouns.

Word	Noun	Adjective	Verb	Adverb
lally column	Yes	No	No	No
support column	Yes	No	No	No

As nouns, support column is a hypernym of lally column; that is, support column is a word with a broader meaning than lally column:

lally column: support column consisting of a steel cylinder filled with concrete
support column: a column that supports a heavy weight

lally column (noun)	support column (noun)
support column consisting of a steel cylinder filled with concrete	a column that supports a heavy weight